Thermal overload relay curve diagram. Connections for a ground sensor.

Thermal overload relay curve diagram 8. Thermal overload relay pr ABB's thermal overload relays are suitable for three-phase or single-phase motor applications with temperature compen-sation between -25 °C and +55 °C. Generally, the process involves wiring the thermal overload relay in series with the motor and the power supply. CT7N thermal overload relays feature a fail-safe "trip-free" Thermal Overload Relays Thermal Overload Relays for plug-in mounting Technical Datasheet Wiring Diagram 0. Introduction The E100 Electronic Overload Relay is the next generation basic-tier electronic overload relay. The Size 1 and 2 Thermal Overload Relays Thermal Overload Relays for plug-in mounting Technical Datasheet Wiring Diagram 0. 4-MC 1 0. 27 - 0. When a fault is detected, both of these contacts switch their position to disrupt the high amount of current flowing to the system or the appliance. Download scientific diagram | The schematic of the conventional thermal overload protection relay from publication: Nickel–titanium shape memory alloy-actuated thermal overload relay system Product or component type Differential thermal overload relay Device short name LR2K Relay application Motor protection Product compatibility LC7K LP1K LP4K LC1K Network type DC AC Thermal overload class Class 10A conforming to IEC 60947-4-1 Thermal protection adjustment range 3. 3 3. To see other supported functions, click here. ðÿƒˆjR €"d˜ûòmÖÿïÏ—Òo pE 6ætF3Ë™ †„#ç›J [ [òHr ’àÿÿR3é’Ò à 0t @ !h}ß/9Säœ i˸µ-]Ns}ÿÏÈ œuKÑÊé­ º%‡ a›° Èò ÓÝŸ¢!òt§å ¡~—?WŒ * Òö’8 ÞO¢ F“ EÖK@ôµLÚpÀ& üÀÏï ô!„ ÷„Sþ ‹4bÿ è-Dé\æ½ ª½´ Rßca‘Ž¾ ò9Ðι‚ˆ¿¥|cð@Ö}2Ûb áä& P¬§¹ ³q² ZZ›‡gPº”t£ (æåy©_u¯a¤(cT This concern is reflected in our CT7N line of thermal overload relays that include many standard features not available with eutectic alloy overload blocks and heater elements of the past. J7tc Thermal Overload Relay Omron Automation Mouser. zip download then the file type is not supported by bulk download. They are the alternative for overload protection to thermal overload relays. Further features are the temperature compensation, trip contact (NC), signal contact (NO), automatic- or manual reset selectable, trip-free mechanism, Application | Thermal Overload Relays with Current Transformer CTxL - 3 Technical diagrams . Penting untuk memahami spesifikasi Thermal Overload Relay (TOR) saat kamu memilih atau membelinya agar sesuai dengan kebutuhanmu. Electronic overload relay EF19 and EF45 Electronic overload relays offer reliable protection in case of overload and phase-failure. Options here include: Thermal overload relay TF42 Data sheet Description – Overload protection – trip class 10 Wiring diagram 95 97 96 98 2T1 4T2 6T3 RESET A M TEST STOP 2CDC232001F0009. Connection for a thermistor probe. abb. Overload Relays and Thermal Unit Selection – Catalog Overload Relay Selection. Relay setting range (A) Fuses to be used with selected relay For use with con-tactor LC1 Reference Weight kg aM (A) gG (A) Thermal overload relay TF42 Thermal overload relays are economic electromechanical 2 ABB DATA SHEET THERMAL OVERLOAD RELAY TF42 Operation mode Wiring diagram 1~ 3~ 95 97 96 98 2T1 4T2 6T3 RESET A M TEST STOP Motor starting time Example of a tripping curve, starting from cold state 2. 165 0. 20 x Ir according to IEC/EN 60947-4-1 standard. 05–1. For more information on the star-delta starter power circuit and control circuit diagrams, refer to Power Wiring Diagram and Control Wiring To connect a thermal overload relay, you need to follow the manufacturer’s instructions provided with the specific model. 6-MC 1 0. 20 x Ir USING THERMAL OVERLOAD RELAY TRIP CURVES Overview Overload relay trip curves present trip time as a fu nction of overload current. net 4 Thermal Overload Relays RW Line Applications RW thermal overload relays have been designed to protect three-phase and single-phase AC motors and direct current motors1) . However if motors are designed with a service factor, which is then shown on the nameplate eg. 3 mm. The overload relay connection diagram is given below, and the overload relay sign is represented by two opposite question marks. 2CDC231013V0013 2CDC231014V0013 EF460. The specifications in relation to short-circuit 1) The SIRIUS 3RU11 thermal overload relays use a bimetal contactor and therefore do not The thermal overload relays are three pole relays with bimetal tripping elements (1 per pole). They offer reliable protection for motors in the event of overload or phase failure. The thermal overload relays are three pole relays with bimetal tripping elements (1 per pole). 30 3. 18 - 0. Green Premium promises compliance with the latest regulations, transparency on environmental Overload Relays and Thermal Unit Selection – Catalog Overload Relay Selection. OLRs are used in combination with the Thermal overload relays Solid state overload relays 3RU21 overload relays up to 100 A with screw connection, CLASS 10 Page Selection and ordering data • Basic Unit 3/10 Circuit diagrams 3/15 Dimension drawings 3/16 - 3/17 Description 3/52 - 3/53 Technical data 3/58 Overload Relay Trip Curve Motor Damage Area Motor Heating Curve Time Required To Trip 0123456789101112 Minutes 100 200 300 400 500 600 Percent Full Load Current Graph shows motor heating curve and overload relay trip curve. The following figure represents the limit curves for the iron and copper components calculated for class Comparison of the heat rise calculation without thermal image (diagram A) and with thermal image (diagram B): Diagram A 14 - Characteristic curves 15 - Dimensional drawings 16 - Schematics 17 Accessories 3RB2 Solid-State Overload Relays 3RB20, 3RB21 for standard applications 18 - Overview The SIRIUS 3RU11 thermal overload relays use a bimetal contactor and therefore do not require a control supply voltage. WRL Thermal Overload Relays Accessory Direct mounting Adjustment (A) Diagram Reference Ref. Overload relay will always trip at a safe value. Description • Overload protection – trip class 10 • Phase loss sensitivity 9065CT9701 Overload Relays and Thermal Units Catalog Table of Contents. Thermal Overload Relay. Features Benefits 3RU11 3RB20/3RB21 3RB22/3RB23 4. X. 6 - U12/16E0. 4. Find selection guidance, technical information, wiring diagrams, and dimension drawings in the E-Catalog. eymery@fr. FIG. Product Net Depth / Length: Tesys Lrd Thermal Overload Relays 16 24 A Class 10a Lr22. 0,12 - 0,18 - U12/16E 0,18 K1 11 0,18 - 0,27 - U12/16E 0,27 K1 1 0 ,10 0,27 - Typical tripping curve for overload relay U12/16E Minimum values of t E time With its versatile application, a thermal overload relay circuit diagram will provide you with a visual representation of the components and their connections that make up the circuit. + 1 N. 4 x In (minimum dial value). (1 N. Dimensional Diagrams (mm) Class 9066. 10 Technical diagrams — motor starting time — Example of a tripping curve, starting from cold state Wiring diagrams — Operation mode 1-phase / 3-phase — External current transformer CTxL with T16 / TF42. com Thermal O/L relays are compensated against ambient temperature variations by a compensation bimetal which is sensitive to the ambient temperature. ABB STOTZ-KONTAKT GmbH 4 1SAC 1010 01 D0201 SST 002 98 Thermal/electronic overload relays Overview SST 133 90 R PTM 91 6566 A 310 SST 098 98 aM in conjunction with the thermal overload relay. reactors, and monitor the thermal state of motors, generators, and transformers. Setting Range (A) depends on the characteristic tripping curves and the level of the tripping current After tripping due to overload, the recovery time allows the load to cool down Operation in the Output Side of Frequency Inverters The RW27-2D thermal overload relays are designed for operation on 50/60 Hz up to 400 Hz and the tripping values are Numerical relay working principle, block diagram & algorithm for thermal overload protection for motor has been explained in Hindi. 1. E100 Electronic Overload Relay Specifications Technical Data Summary of Changes This publication contains the following new or updated informatio n. 32. - drilling Thermal overload relays are protective electrical appliances used for overload protection of motors or other electrical equipment and electrical circuits, The thermal overload relay is mainly used for overload protection of Thermal overload relay TF42 Thermal overload relays are economic electromechanical 2 ABB DATA SHEET THERMAL OVERLOAD RELAY TF42 Operation mode Wiring diagram 1~ 3~ 95 97 96 98 2T1 4T2 6T3 RESET A M TEST STOP Motor starting time Example of a tripping curve, starting from cold state 2. 6 - 0. Operation mode 1-phase / 3 -phase . 27-MC 1 0. Starter combinations are set up together with contactors. The secondary current can be measured by thermal overload relays. 1 1SAZ711201R1033 2. Example of a tripping curve, starting from cold state Wiring Diagram . Reading a thermal overload relay circuit diagram can seem daunting at first, but with the right resources, it’s actually quite straightforward. Product Net Height: 88. 5 Product ID 1SAZ211201R1040 Dimension Diagram 1SAZ200402F0001 Dimensions Product Net Width 44 mm Product Net Height 80 mm Product Net Depth / 94 mm Characteristic Curve UL Certificate UL_E48139 Container Information Package Level 1 Units 1 piece eaton-tripping-devices-overload-relay-zb-overload-relay-wiring-diagram-003. 48" 9. ; Working Principle: The thermal relay operates in our CT7N line of thermal overload relays which include many standard fea - tures not available with the eutectic alloy overload blocks and heater elements of the past. 10 Technical diagrams — motor starting time — Example of a tripping curve, starting from cold state Wiring diagrams — Operation mode 1-phase / 3-phase — External current transformer CTxL with T16 / TF42 Key learnings: Thermal Relay Definition: A thermal relay is defined as a device that uses the unequal expansion rates of metals in a bimetallic strip to detect overcurrent conditions. 1 A. Resource The characteristic curves for the individual overload relays can be downloaded from the Internet (https: (S3, spring-loaded connection, through-hole technology) Figure C-40 3RB3. The TF42-0. Introduction; Motor NEMA Style Dimensional Diagrams; Class 9999 Motor Logic Overload Relays Accessories. 3 0. Curves with one solid line (maximum) and one dashed line (average) apply to present • Overload protection trip Class 10 and Class 10 A • Phase loss sensitivity • Adjustable current The external current transformers transform the primary current related to their transformation Tripping curve: The overload or thermal protection pickup (Ir) is set by using a multi-position dial. The control circuit is used to connect the thermal overload relay to a control panel or other monitoring devices. 490 Illustrative picture Function Use with relays Reference Ref. Operation mode 3-phase only External current transformer CT with EF19 . 48" Thermal overload relay TF42 Data sheet Description – Overload protection – trip class 10 Wiring diagram 95 97 96 98 2T1 4T2 6T3 RESET A M TEST STOP 2CDC232001F0009. 18 - U12/16E0. 320 0. Contactors Amp Thermal Overload Relays. Assembly Installation of LC1G115–225 Contactor and Overload Relay on Plate; Assembly Installation of LC1G265–500 Contactor and Overload Relay on Plate; Assembly Installation of LC1G630–800 Contactor and Overload Relay on Plate; TeSys Giga Contactor Assembly with TeSys Giga Overload Relay Separately Mounted Thermal Overload Relays Thermal Overload Relays for plug-in mounting Setting Range Type D. Cara Memilih Sepesifikasi Thermal Overload Relay. 5 Thermal Overload Relay TA25DU-8. 75. The thermal overload relay can make up a The thermal overload relay can be mounted directly under the line contactor (recommended) or. TYPE MW-21 THERMAL OVERLOAD RE­ LAY employs an electrically heated bi-metallic disc to open a pair of contacts in the coil circuit of a con­ tactor for the disconnection of power on the occur­ rence of an overload. A thermal overload relay is an electromechanical protection device that monitors the current flowing through an electrical circuit. Dalam rangkaian listrik, komponen ini memiliki peran yang sangat penting, karena bisa melindungi dari arus listrik berlebih dengan prinsip kerja panas atau thermal. Wiring Diagram With Manual Reset, for contactors K1-. ; Working Principle of a Thermal Overload Relay The overload or thermal protection tripping range is 1. To maintain these characteristics, each element of the overload relay must carry the motor current as shown in the schematic in the wiring diagrams library. Further features are the temperature compensation, trip contact (NC), signal contact (NO), automatic- or manual reset selectable, trip-free mechanism, Thermal Overload Relays with Current Transformer CTxL T16 and TF42 with CT4L185R/4, CT4L310R/4, CT5L500R/4, CT5L850R/4 The external current transformers transform the primary current related to their transformation ratio into a smaller secondary current. 48" These are classified into two types namely thermal overload relay and magnetic overload relay. 09" 88. Thermal overload relays are thus described as current-dependent Relay contacts: A thermal overload relay has two contacts – Normally Open(NO) and Normally closed(NC). The default Ir pickup setting value is 0. . GE Power Management Applications 14 46 Unbalance - Negative Sequence 48 Multiple Starts/Locked Rotor 49 Stator WindingOvertemperature 49/51 Overload Curves/FlexCurves 50 Short Circuit/Mechanical Jam/Rapid Trip 50G/51G Zero = thermal model calculates value in terms Understanding of overload relay trip class 10 /20 /30 is very important for correct setting of thermal overload relay. Measurements. Isolated Auxiliary Contacts; DIN Adapter; Lug-Lug and Lug-Extender Kits; TA25DU-8. -----STOP . 27 - U12/16E0. thermal overload relays. A = Indirectly heated bimetal strips B = Trip slide C = Trip lever D = Contact lever E = Thermal overload relays T16-3. 4 - 0. 4 - U12/16E0. 18-MC 1 0. The overload or thermal protection tripping range is 1. Overload Relay Principle Of Operation Types Connection. The Datasheet wiring diagram slip ring motor resistance starter autotransformer starter medium voltage Schneider contactor ac dc switch telemecanique altivar 31 fault codes wiring diagram altivar 31 altivar Green Premium TM label is Schneider Electric’s commitment to delivering products with best-in-class environmental performance. eps Export product specification Note: If file(s) are missing from the . Thermal OLR is based on the principle of deformation of a bimetallic strip on heating. The electronic overload relay is a microprocessor-based device and comes with extensive built-in functionalities. Functional Block Diagram 15 CURVE 12 9 7 4 2 1 10 PHASEC URRENT (multiples of full load) 1 Full Load Setpoint 0. Starter combinations are setup together with contactors. 10 Manual Reset 0. Dimensions . 86" 0. Thermal Overload Relay Thermal overload relay adalah perangkat pelindung, dan yang terutama dirancang untuk memotong daya setiap kali motor menggunakan terlalu banyak arus untuk periode waktu yang lama. 10 A T16-4. Thermal Overload Relay, Showing Heater and Installation Method. To use them properly, you must understand their application, construction, and limitations. For a wider range of –25° C to +55 °C consult the graph opposite. Thermal overload relays Type TA Class 10 Class 20 Description • Available for starter construction with A Line contactors and separate panel mounting • Designed for close couple mounting The tripping curves (cold or warm starting, 3 phases and 2 Thermal overload relay TF42 Data sheet Description – Overload protection – trip class 10 Wiring diagram 95 97 96 98 2T1 4T2 6T3 RESET A M TEST STOP 2CDC232001F0009. 2 1SAZ711201R1035 3. This concept has been discussed in hi Thermal overload relay TF42 Thermal overload relays are economic electromechanical 2 ABB DATA SHEET THERMAL OVERLOAD RELAY TF42 Operation mode Wiring diagram 1~ 3~ 95 97 96 98 2T1 4T2 6T3 RESET A M TEST STOP Motor starting time Example of a tripping curve, starting from cold state 2. Tripping curve, starting from cold state Dimensions in mm and inches 2. 1 0. 17 thermal overload relay is an economic electromechanical protection device for the main circuit. In Depth Analysis Of The Working Principle Relays Siemens Apt. 87" 0. LTMR Controllers. When the RW thermal overload relays are intended to protect single-phase AC loads or DC loads, the connection should be made as shown in the diagrams on Based on the principle of operation they are classified into thermal and electronic overload relays. For more detailed information on “Thermal overload protection with user defined characteristic curve” function, refer to SIPROTEC 5 devices, V8. Application Features ABB Low Voltage & Systems > Low Voltage Products & Systems > Control Products > Contactors > Thermal Overload Relays > TF42 - Thermal Overload Relays 3D CAD models You can submit your suggestions via feedback or contact the online customer service, we will improve them as soon as possible: jean-michel. range -25 up to 60°C – The motor will stop shortly, if no action is performed to solve the thermal overload. No. Motor starters are combinations of overload relays and contactors. Is it possible that Thermal Overload Relay not tripped above the set point after determined time Differential thermal overload relays for use with fuses or magnetic circuit-breakers GV2 L and GV3 L b Compensated relays with manual or automatic reset, b with relay trip indicator, b for a. They are used mainly to protect motors against overload and phase failures. weg. When the motor thermal capacity used exceeds 100%: the thermal overload protection triggers a trip and the state of the auxiliary contacts changes. This list includes substantive updates only and is not intended to reflect all changes. To achieve this, these relays include an NC (normally closed) relay. 3 Motor current setting procedure 92 9. Intermittent periodic duty, t a: Motor starting time . Thermal relay Thermal overload protection is important for safety because electrical equipment can get very hot and can potentially start fires if they are not properly protected. 4 Overload trip test for EOL 92 9. If the motor is connected in star = 440 V 60 Hz the overload relay then has to be set to 3. 2 - 2CDC107045D0201 Wiring diagram 95 97 96 98 RESET Auto Man TEST STOP T1 T2 T3 L1 L2 L3 2CDC232007F0013 Resistance and power loss per pole and short-circuit protective devices Thermal Overload Relays Ex9R Trip Curves Cold Status Three-Phase Two-Phase Two-Phase Three-Phase Heat Status Multiple of Rectified Current Min S Thermal Overload Relays Ex9R Wiring Diagrams Ex9R12 Ex9R38 Ex9R100 Manual 97 98 95 96 Stop Test Rest Auto 1 3 5 2 4 6 Ex9R185 Manual 97 98 95 96 Stop Test Rest Auto 1 3 5 2 4 6 Tripping curves Thermal/electronic overload relays and Accesssories Dimension diagrams. The thermal overload alarm is cleared by the overload relay when the thermal capacity used falls below 80%. 1 Sizing overload relays for motor applications 85 8. A thermal type relay is a protective device, and that is mainly designed to cut the power whenever the motor uses too much current for an extended time period. Other standard features . www. Weight (kg) Relay mounting with screws or on a 35 mm DIN rail 269PLUS RELAY269PLUS RELAY FUNCTIONAL BLOCK DIAGRAM MAIN Legend. 60 2CDC232005F0211 Intermittent periodic duty, t a: Motor starting time . Figure C-41 3RB3. 3 Phase Thermal Overload Relay. (A) (A) Pack Weight pcs. 35 0. in mm and 07. 48" The TF42-2. Tripping classes of the thermal overload relays 4UBOEBSE DMBTTFT JO *&$ BSF DMBTTFT " 5IF USJQQJOH DMBTT JOEJDBUFT BDDPSEJOH UP *&$ UIF NBYJNVN USJQQJOH UJNF JO TFDPOET VOEFS TQFDJàFE DPOEJUJPOT PG Installation diagrams OVERLOAD Size 1 or 2 Type A Thermal Overload Relay, 3 Pole, Ambient Compensated or Non-Compensated The relay The Type A thermal overload relay (OLR) is a bimetallic device which, with the properly selected wire and heaters, will provide motor protection for running and stalled rotor overloads in motor circuits not exceeding 600 volts. Figure 1 – Principle of operation of a three pole thermally delayed bimetal motor protection relay with temperature compensation. 30 & higher manuals. 5 Extended Product Type TA25DU-8. 1 Mounting 87 9. 3 thermal overload relay is an economic electromechanical protection device for the main circuit. TF42 thermal overload relays are available up to 38 A View results and find telemecanique thermal overload relay tripping curve datasheets and circuit and application notes in pdf format. Safe and reliable control circuits A white contact carrier ensures the contactor state is visible at all times, even with accessories mounted. What Should We Do If The Thermal Overload ðÿƒˆjR €"d˜ûÏ·éÿ ¾ÄywÀžHÂ6»©ÚË^nHIX²¾NFØ2 ±-W’“ ‚ÿµÌ´ój 3à Ðô @††&èîýîß® +×ÌJª ¥²ÒÅ=_ ¿{f¥ÙYùj%§½•s The connection diagram of a thermal overload relay includes terminals for the motor and power supply connections. Motor starters are combinations of overload Description • Overload protection – trip class 10E, 20E, 30E selectable The TF42-10 thermal overload relay is an economic electromechanical protection device for the main circuit. O. Thermal overload relays are economic electromechanical protection devices for the main circuit. Overload relays typically operate on an inverse time curve where the tripping time becomes less as the current increases. 5 Restart after tripping 93 9. E-Catalog Documentation . External Reset Mechanisms — Class 9066 ; Application Data. Time-Current Characteristic Curve: 1SAZ700506F0002; CAD Dimensional Drawing: 2CDC001079B0201; Dimension Diagram: 1SAZ700405F0001; Dimensions. Circuit diagram and main contacts arrangement Trip curve according to IEC 60947-4-1 Thermal overload relays 30 September, 2020 Slide 24 Based on new technology – Separate STOP button – Trip Class 10 – Operating temp. The motor terminals are connected to the normally closed (NC) contacts of the relay, which means that the contacts are closed Working principle diagram of thermal relay. kg/pc. It offers reliable and fast protection for motors in the event of overload or phase failure. 1 10,000 1,000 100 TRIP TIME (seconds) 10 1 r relay to determine the lower limit of the running cool down curve, The 469 thermal overload curves are based solely on measured current, assuming a normal 40°C ambient and normal eaton-tripping-devices-overload-relay-zb-overload-relay-wiring-diagram-002. Consistent and reliable protection The consistent high quality of Sprecher + Schuh thermal overload relays is ensured by a complex, factory current calibration Thermal overload relay class 10: 4-10 seconds; Thermal overload relay class 20: 6-20 seconds; Thermal overload relay class 30: 9-30 seconds; Single Phase Vs. 2020 Application | Thermal Overload Relays with Current Transformer CTxL - 3 Technical diagrams . 36" 12. mounted standalone and connected between the motor stator terminals and the delta contactor. Trip curves for Square D® products assume a cold start with the coil energized at the rated voltage in ABB STOTZ-KONTAKT GmbH 5 2CDC106014C0201 Thermal overload relays TA Electronic overload relays E Overview SB 7399 SB 7398 PTM 91 6570 PTM 91 6569 E200DU E320DU E500DU E800DU Overload Relay Connection Diagram. 9 - Dengan melakukan perhitungan ini, kamu akan dapat mengatur Thermal Overload Relay (TOR) sesuai dengan kebutuhan motor listrik yang kamu miliki. in mm and inches . It is typically used in combination with contactors or motor starters to protect motors and other electrical equipment from overheating due to Overload relay diklasifikasikan ke dalam dua jenis yaitu thermal overload relay dan overload relay magnetik. 3. Thermal overload relay is the most widely used electrical component for motor protection. 5 A Thermal overload relay TF65 and TF96 Thermal overload relays are economic electromechanical protection devices for the main circuit. 2 Connection 88 9. When properly applied, no matter how high the current drawn, the overload relay provides aM in conjunction with the thermal overload relay. -. Thermal O/L relays are designed to operate between –5 °C and +40 °C in compliance with standard IEC 947-4-1. c. 15, the set current for the overload relay can be raised by 15% compared to full-load current or to the service factor amps (SFA) which is normally indicated on the nameplate. External current transformer CT with T16 / TF42 . L. A high precision current setting structure of thermal overload relay includes a support (1), a compensating double gold (3), an adjusting screw (4) and a setting cam (5). 49" 8. TYPE MW-Zl THERMAL OVERLOAD RELAY NO . The device has trip class 10. 10 0. Thermal overload relays T16-3. Thermal overload relays TF42 ABB’s TF42 thermal overload relays are economic electromechanical protection devices for the main circuit. Weight (kg) 0. 32" 14. The different types of thermal overload relays are also specified by their number of poles or if they’re single phase, or three phase. 6 ATEX Operating instructions 93 Thermal Overload Relay (TOR), adalah komponen elektronika yang digunakan untuk menyusun rangkaian suatu panel listrik. It is also important for the lifespan of the equipment, as overheating can shorten its life. Product Net Width: 45 mm. 2 Selected Optimized Coordination (SOC) 85 9 Installations and comissioning for overload relays 87 9. 12 - 0. C. ) overload relay. 9 - Thermal overload relays Type TA Class 10 Class 20 Description • Available for starter construction with A Line contactors and separate panel mounting • Designed for close couple mounting The tripping curves (cold or warm starting, 3 phases and 2 Thermal overload relays. Thermal Overload Relays. Connections for a ground sensor. pxgiw revmk kfpmdo yhdknt jnydl yihmv mths qdpth mty mhihygm