Definite Purpose Contactors & Starters CR453A Series Contactors CR454A Series Starters Caution: Before installing in a nuclear application, determine that the product is intended for such use. Warning: Disconnect power before installing or servicing. Description Ratings – Full Voltage, Non-Reversing GE’s CR453A magnetic contactors provide a 2- or 3-pole Ratings Resistive device for use in air conditioning units or other general Frame VAC Horsepower Rating Per purpose applications. These instructions give information Size FLA LRA 1 PH 3 PH Pole about ratings, installation, accessories and wiring, overload 120 150 2 – relay may be added if needed. Factory assembled starters 240 150 3 7.5 CR453AB 25 35 480 125 – 10 CR454A include overload relay. 600 100 – 10 120 180 2 – 240 180 5 10 CR453AC 30 40 480 150 – 15 600 120 – 15 120 240 3 – 240 240 7.5 10 CR453AD 40 50 480 200 – 20 600 160 – 20 Motor branch circuit and control circuit overcurrent protection should be supplied in accordance with the National Electrical Code or local code as required. CR453A contactors are suitable for use on a circuit capable of delivering not more than 5,000 RMS symmetrical amperes, 600 volts maximum when protected by fuses or a circuit Typical CR453A Series contactor breaker having an interrupting rating not less than 5,000 RMS symmetrical amperes. Power Terminal Tightening Torque (lbs.-in.) Use 75° C copper conductors only. Terminal Type Torque Values Box Lug 40 Pressure Plate 20 Binding Screw 20 Contactor Installation Starter Installation Before connecting to power supply: 1. Remove all packing. 1. Remove all packing. 2. Motors with service factor of 1.15 or greater. 2. Operate movable magnet and operating arm by • Select overload relay as per the FLA shown in the pressing down on the operating arm from the front motor nameplate. or side of the contactor to assure free movement. • Adjust the front mounted tripping current setting 3. Mount starter on a sturdy vertical support. dial to the motor FLA. 4. Make electrical connections as per wiring diagram. 2. Motors with service factor less than 1.15 For quick connect wiring, use UL recognized insulated • Select overload relay as per the formula: Motor FLA terminals. (shown in the motor plate) x 0.09. • Adjust the front mounted tripping current setting dial Mounting Hole Dimensions to the result of the above mentioned motor FLA. 1.70 43,2 3. Operate movable magnet and operating arm by pressing down on the operating arm from the front or side of the .35 contactor to assure free movement. 8,9 4. Mount starter on a sturdy vertical support. 3.75 95,3 3.28 5. Make electrical connections as per wiring diagram. 83,3 3.16 80,3 For quick connect wiring, use UL recognized insulated terminals. 6. Select the four modes by means of a front selector lever. MOUNTING HOLES FOR 7. Overload relays features tripping indicator, independent #10 SCREWS(6 PLACES) & double break auxiliary tripping contacts (1NO+1NC) with welding check lever. Contactor Wiring Diagram 8. Overload relay features thermal protection against 3 PHASE LINE CONNECTION balanced overload, differential protection against AUX CONTACT OPTONS unbalanced overloads and also ambient temperature TYPE LEFT RIGHT FRONT VIEW SIDE SIDE CONTROL compensation. C C VOLTAGE L1 L2 L2 1 SPDT M NC N NC N CR454A Series Starter Dimensions C C C C 2 SPDT 2.25 57,0 NC N NC N NC N NC N 1.12 OPTIONAL OPTIONAL 28,5 13 23 33 43 .24 3.13 AUX AUX CONTACTS CONTACTS 1.71 79,4 6,0 2 NO 43,3 14 24 34 44 T1 T2 T2 13 21 31 43 1 NO-1 NC 14 22 32 44 3.28 NOMENCLATURE 83,3 3 PHASE LINE CONNECTION M-LINE CONTACTOR 5.68 NO-NORMALLY OPEN 144,3 NC-NORMALLY CLOSED 1.70 .27 3.87 MOUNTING HOLES FOR 43,2 6,9 98,2 #10 SCREWS(6 PLACES) Check for Welded Contacts in Overload Relay Overload Relays Catalog No. Disconnect power from device and control wiring from the Current Range (A) Contactor Class 10 Class 20 terminals of the relay. Connect the bell set or resistance- RT1B RT12B 0.16-0.26 measuring instrument across the relay terminals. Depress RT1C RT12C 0.25-0.41 and release the reset arm to ensure the relay is reset. In this RT1D RT12D 0.4-0.65 condition there should be continuity between the terminals. RT1F RT12F 0.65-1.1 RT1G RT12G 1.0-1.5 RT1H RT12H 1.3-1.9 In the tripped condition, the circuit between the terminals RT1J RT12J 1.8-2.7 should be open indicating the contacts are operating CR453AB, RT1K RT12K 2.5-4.1 normally. Remove the bell set or resistance measuring AC, AD RT1L RT12L 4.0-6.3 apparatus, rewire the relay terminals and reset the relay for RT1M RT12M 5.5-8.5 RT1N RT12N 8-12 normal operation. RT1P RT12P 10-16 RT1S RT12S 14.5-18 Starter Wiring Diagram RT1T RT12T 17.5-22 L2 L3 L1 AUX CONTACT OPTONS RT1U RT12U 21-26 FRONT VIEW TYPE LEFT RIGHT WIRE B SIDE SIDE CR453AC, AD RT1V RT12V 25-32 WIRE A C C CR453AD RT1W RT12W 30-40 1 1 SPDT L2 L3 L1 For further technical details on overload relays, refer to REMOTE NC N NC N CONTROL C C C C installation instructions GEH-6237A. M 2 SPDT NC N NC N NC N NC N 95 96 OPTIONAL OPTIONAL AUX AUX CONTACTS CONTACTS 97 98 13 23 33 43 Installation 2 NO T1 T2 T3 14 24 34 44 13 21 31 43 1 NO-1 NC CONTROL CIRCUIT FUSING 14 22 32 44 MOTOR (IF USED) L1 L2 NOMENCLATURE M-LINE CONTACTOR OL-THERMAL OVERLOAD RELAY SPDT-SINGLE POLE DOUBLE THROW NO-NORMALLY OPEN NC-NORMALLY CLOSED 96 1 NOTE: ADDITIONAL CONTROL CIRCUIT PROTECTION ELEMENTARY L1 L2 MAY BE REQUIRED.PREFER TO NATIONAL ELECTRIC CODE OR LOCAL CODES. OL 1 M FOR SEPERATE CONTROL SOURCE-OMIT WIRES A AND B. Typical 250V side auxiliary contact kit. 95 96 CONNECT CONTROL SOURCE TO 1 ON CONTROL DEVICE. REMOTE CONTROL AND 96 ON OVERLOAD RELAY. Accessory Kit Installation Accessories CR453A Accessories Standard Accessory Contacts (with quick connects on C-2000 side-mount accessories) accessories 600V side-mount aux. 1NO-1NC CR453XC611 BCLL11 contact block 2NO CR453XC620 BCLL20 250V side-mount aux 1 SPDT CR453XC211 — contact block 2 SPDT CR453XC222 — 600V front-mount aux. 1NO BCLF10 BCLF10 contact block 1NC BCLF01 BCLF01 Typical 600V side auxiliary contact kit. Mechanical interlock, 2NC CR453XM602 BEL02 side-mount Front-Mount Auxiliary Contacts Side-Mount Auxiliary Contacts Assembly 2-Speed Controllers Mechanical interlock Disassembly Overload Relays 1 2 These instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation, operation or maintenance. Should particular problems arise which are not covered sufficiently for the Purchaser’s purposes the matter should be referred to the nearest GE Industrial Systems sales office. 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