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Klixon 4CR series starter relay motor protector
For AC starter relays up to 25 amps
H.S. Number: 8536.49.01
Series Specification Sheets (pdf)
All current relay wiring

Klixon 4CR1 Drawing           Klixon
                          4CR2 Drawing          Klixon 4CR Drawing
4CR1   4CR2   4CR3


    The Klixon 4CR current type motor starting relay is a compact, high capacity relay designed for universal application. The 4CR series is compatible with the Klixon 2CR, Klixon SL10, RBM 90-4** and RBM 91252 series relays.

    Notes about substitutions as there are high reorder quantities and usually it is desirable to find one of the relays below that we have in stock.

    1. Mounting: These relays can be mounted in any position so the mounting is not as important as with other relays. e.g. 4CR-1-702 is a good substitute for 4CR-2-702. Keep the chart below in mind as the two-circuit versions in blue must be of the same style, but it is possible to use a two-circuit relay for single-circuit relay with the use of a jumper.

    2. Rating: It is okay to move one number higher or lower or even more if the application is not too sensitive. e.g. 4CR-1-702 is a good substitute for 4CR-1-701 or 4CR-1-703.

$62.50 each

4CR ยป

Bulk Pricing for any 4CR series relay
100 $48.50 each
500 $38.50 each
1000 $32.50 each


Electrica and EMB(Embraco) Relays

Klixon Relays

3CR
9660
C6360 series

General Electric Relays
3ARR2
3ARR3
3ARR4
3ARR12
3ARR20

3ARR22
3ARR30
3ARR31
3ARR32


Fan & Switching Relays

Potter-Brumfield Relays


4CR Types. Red=Single circuit. Blue=Two circuit (add jumper for single)
Prefix Mounting Bracket Terminal
1 2 3 4
4CR-1 2 holes: 2.17" c-to-c empty QM250 QM250 QM250
4CR-2 2 holes: 1.57" c-to-c empty QM250 QM250 QM250
4CR-3 2 holes: 2.17" c-to-c QM250 QM250 QM250 QM250
4CR-4 2 holes: 2.17" c-to-c empty screw screw screw
4CR-6 2 holes: 1.57" c-to-c empty screw screw screw
4CR-7 2 holes: 2.17" c-to-c QM250 QM250 QM250 DoubleQM
4CR-18 2 holes: 2.17" c-to-c empty QM250 QM250 DoubleQM
4CR-19 2 holes: 1.57" c-to-c empty QM250 QM250 QM250
4CR-20 2 holes: 1.57" c-to-c empty QM250 QM250 DoubleQM
4CR-21   terminal terminal terminal terminal
4CR-22 None empty QM250 QM250 QM250
4CR-23 2 holes: 1.57" c-to-c QM250 QM250 QM250 QM250
4CR-24 2 holes: 2.17" c-to-c screw screw screw screw
4CR-26 2 holes: 2.17" c-to-c empty QM250 QM250 QM250
4CR-28   empty screw screw screw
4CR-29 2 holes: 2.17" c-to-c screw screw screw screw
4CR-34 2 holes: 2.17" c-to-c DoubleQM QM250 QM250 QM250
4CR-37 2 holes: 2.17" c-to-c empty QM187 QM QM
4CR-38 2 holes: 2.17" c-to-c empty QM250 QM250 DoubleQM
4CR-39 2 holes: 2.37" c-to-c
w/rubber insert
empty QM250 QM250 QM250
4CR-45 1 hole empty QM250 QM250 QM250
4CR-48 2 holes: 2.17" c-to-c empty* QM250* QM250* QM250*
4CR-49 None empty QM250 QM250 QM250
4CR-51 None empty QM250 QM250 QM250
4CR-52 1 hole QM250 QM250 QM250 QM250
4CR-54 2 holes: 2.17" c-to-c QM250 QM250 QM250 QM250
4CR-55 2 holes: 2.17" c-to-c empty QM250 QM250* QM250
4CR-57 2 holes: 2.17" c-to-c empty QM250 QM250 QM250
4CR-61 2 holes special QM250 QM250 QM250 QM250
4CR-63 2 holes: 2.17" c-to-c empty QM250 QM250 QM250
4CR-64 2 holes: 2.17" c-to-c empty screw screw screw

   * sealant around terminal opening
 

2CR and 4CR Equivalents
2CR-**-### 4CR-**-###+500












 
2CR-**-### 4CR-**-###+500
2CR-3 4CR-2 2CR-24 4CR-29
2CR-4 4CR-1 2CR-25 4CR-28
2CR-5 4CR-34 2CR-27 4CR-6
2CR-6 4CR-6 2CR-28 4CR-3
2CR-7 4CR-23 2CR-31 4CR-26
2CR-10 4CR-16 2CR-32 4CR-12
2CR-11 4CR-18 2CR-34 4CR-27
2CR-12 4CR-31 2CR-36 4CR-4
2CR-13 4CR-19 2CR-37 4CR-16
2CR-14 4CR-20 2CR-38 4CR-16
2CR-15 4CR-21 2CR-41 4CR-2
2CR-17 4CR-5 2CR-42 4CR-24
2CR-19 4CR-14 2CR-43 4CR-8

Master list (order above):
4CR1-605, 4CR-1-605, 4CR1-615, 4CR-1-615, 4CR1-620, 4CR-1-620, 4CR1-624, 4CR-1-624, 4CR1-625, 4CR-1-625, 4CR1-626, 4CR-1-626, 4CR-1-629, 4CR1-633, 4CR-1-633, 4CR1-634, 4CR-1-634, 4CR1-635, 4CR-1-635, 4CR1-641, 4CR-1-641, 4CR1-643, 4CR-1-643, 4CR1-645, 4CR-1-645, 4CR1-651, 4CR-1-651, 4CR1-653, 4CR-1-653, 4CR1-655, 4CR-1-655, 4CR1-658, 4CR-1-658, 4CR-1-659, 4CR1-659, 4CR1-664, 4CR-1-664, 4CR1-671, 4CR-1-671, 4CR-1-672, 4CR1-674, 4CR-1-674, 4CR1-675, 4CR-1-675, 4CR-1-679, 4CR1-680, 4CR-1-680, 4CR1-684, 4CR-1-684, 4CR-1-685, 4CR-1-685, 4CR1-689, 4CR-1-689, 4CR1-690, 4CR-1-690, 4CR1-695, 4CR-1-695, 4CR1-696, 4CR-1-696, 4CR1-700, 4CR-1-700, 4CR1-702, 4CR-1-702, 4CR1-704, 4CR-1-704, 4CR1-708, 4CR-1-708, 4CR1-709, 4CR-1-709, 4CR-1-710, 4CR1-710, 4CR1-712, 4CR-1-712, 4CR1-714, 4CR-1-714, 4CR1-716, 4CR-1-716, 4CR1-717, 4CR-1-714, 4CR1-720, 4CR-1-720, 4CR1-722, 4CR-1-722, 4CR1-724, 4CR-1-724, 4CR1-725, 4CR-1-725, 4CR1-726, 4CR-1-726, 4CR1-728, 4CR-1-728, 4CR1-729, 4CR-1-729, 4CR1-730, 4CR-1-730, 4CR1-731, 4CR-1-731, 4CR1-732, 4CR-1-732, 4CR1-734, 4CR-1-733, 4CR1-733, 4CR-1-734, 4CR1-735, 4CR-1-735, 4CR1-738, 4CR-1-738, 4CR1-741, 4CR-1-741, 4CR1-742, 4CR-1-742, 4CR1-743, 4CR-1-743, 4CR1-745, 4CR-1-745, 4CR1-747, 4CR-1-747, 4CR1-748, 4CR-1-748, 4CR1-749, 4CR-1-749, 4CR1-751, 4CR-1-751, 4CR1-755, 4CR-1-755, 4CR1-757, 4CR-1-757, 4CR1-758, 4CR-1-758, 4CR1-760, 4CR-1-760, 4CR1-764, 4CR-1-764, 4CR1-765, 4CR-1-765, 4CR1-766, 4CR-1-766, 4CR1-770, 4CR-1-770, 4CR1-772, 4CR-1-772, 4CR1-774, 4CR-1-774, 4CR1-778, 4CR-1-778, 4CR1-779, 4CR-1-779, 4CR1-780, 4CR-1-780, 4CR1-781, 4CR-1-781, 4CR1-782, 4CR-1-782, 4CR1-785, 4CR-1-785, 4CR1-902, 4CR-1-902, 4CR1-908, 4CR-1-908, 4CR1-920, 4CR-1-920, 4CR1-930, 4CR-1-930, 4CR2-643, 4CR-2-643, 4CR2-650, 4CR-2-650, 4CR-2-657, 4CR2-681, 4CR-2-681, 4CR2-700, 4CR-2-700, 4CR2-702, 4CR-2-702, 4CR2-705, 4CR-2-705, 4CR2-752, 4CR-2-752, 4CR2-751, 4CR-2-751, 4CR2-769, 4CR-2-769, 4CR3-648, 4CR-3-648, 4CR3-650, 4CR-3-650, 4CR3-670, 4CR-3-670, 4CR3-700, 4CR-3-700, 4CR3-728, 4CR-3-728, 4CR3-735, 4CR-3-735, 4CR3-745, 4CR-3-745, 4CR4-625, 4CR-4-625, 4CR4-652, 4CR-4-652, 4CR4-662, 4CR-4-662, 4CR-4-706, 4CR4-706, 4CR4-735, 4CR-4-735, 4CR6-601, 4CR-6-601, 4CR6-606, 4CR-6-606, 4CR6-631, 4CR-6-631, 4CR6-634, 4CR-6-634, 4CR6-638, 4CR-6-638, 4CR6-652, 4CR-6-652, 4CR6-657, 4CR-6-657, 4CR6-664, 4CR-6-664, 4CR6-699, 4CR-6-699, 4CR6-708, 4CR-6-708, 4CR6-672, 4CR-6-672, 4CR7-778, 4CR-7-778, 4CR18-905, 4CR-18-905, 4CR19-628, 4CR-19-628, 4CR20-724, 4CR-20-724, 4CR22-685, 4CR-22-685, 4CR22-744, 4CR-22-744, 4CR23-724, 4CR-23-724, 4CR23-749, 4CR-23-749, 4CR-24-621, 4CR-24-647, 4CR24-674, 4CR-24-674, 4CR24-914, 4CR-24-914, 4CR28-666, 4CR-28-666, 4CR29-622, 4CR-29-622, 4CR29-638, 4CR-29-638, 4CR29-719, 4CR-29-719, 4CR29-772, 4CR-29-772, 4CR29-777, 4CR-29-777, 4CR34-652, 4CR-34-652, 4CR38-774, 4CR-38-774, 4CR38-921, 4CR-38-921, 4CR39-692, 4CR-39-692, 4CR45-616, 4CR-45-616, 4CR45-652, 4CR-45-652, 4CR48-782, 4CR-48-782, 4CR49-764, 4CR-49-764, 4CR52-677, 4CR-52-677, 4CR52-705, 4CR-52-705, 4CR52-727, 4CR-52-727, 4CR52-744, 4CR-52-744, 4CR52-761, 4CR-52-761, 4CR54-782, 4CR-54-782, 4CR55-653, 4CR-55-653, 4CR57-170, 4CR-57-170, 4CR57-666, 4CR-57-666, 4CR63-642, 4CR-63-642, 4CR63-644, 4CR-63-644, 4CR63-654, 4CR-63-654, 6CR42-171, 6CR-42-171, SL10A-625