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Klixon Prefixes:
1NT
2ACE
2AM
2BM
2MM
2TC
3AM
3BT
3CR
3HM
3MP
3NT
3P
3SB
3SP
3TC
4AM
4BA
4BT
4CR
4SP
4TM
5BT
5SP
5TC
5TM
6AP
6PS
6TC
7AM
7BT
7HT
8AM
8EA
8HT
8SP
9HT
9TC
10HT
12HT
14HT
15AA
15AM
15HM
15TC
16HM
17AM
20TC
30AA
31AA
32AA
31HM
32HM
33HM
34HM
35HM
37HM
40AA
41AA
42AA
1822
4344
4391
6752
6766
6790
7235
7236
7270
7271
7274
7277
7851
7854
7855
7895
8347
8348
9115
9660
9700K
215**
283**
A*
ACMP
AT
B*
BE*
BJE
BR*
BY*
C*
CA
CDA
CDLA
CDLM
CDM
CE*
CG*
CLA
CLM
CM
CR*
CS*
CW*
CY*
D*
DP
EXT
FDL*
KA
KX
LE*
M1
M2
MA10
MAXI
ME*
MG*
MJE
MKA
MR*
MS*
MW*
MY*
PDA
PDLA
PDLM
PDM
PS*
PS80
RP
SB
SDL*
SJA
SKA
SLA
SL9
SL10
SL11
SOS
SP
TH

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.

$57.50 each

4CR »


Bulk Pricing for any 4CR series relay
100
$40.25 each
500
$29.75 each
1000
$28.50 each


EMB (Emraco) 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





4CR-19
2 holes: 1.57" c-to-c
empty
terminal
terminal
terminal
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-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-52
1 hole
QM250 QM250 QM250 QM250
4CR-54
2 holes: 2.17" c-to-c QM250 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

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, 4CR1-635, 4CR-1-635, 4CR1-641, 4CR-1-641, 4CR1-651, 4CR-1-651, 4CR1-653, 4CR-1-653, 4CR1-655, 4CR-1-655, 4CR1-658, 4CR-1-658, 4CR1-664, 4CR-1-664, 4CR1-671, 4CR-1-671, 4CR-1-672, 4CR1-674, 4CR-1-674, 4CR1-675, 4CR-1-675, 4CR1-680, 4CR-1-680, 4CR1-690, 4CR-1-690, 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, 4CR1-712, 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, 4CR1-726, 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-1-734, 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, 4CR1-778, 4CR-1-778, 4CR1-779, 4CR-1-779, 4CR1-780, 4CR-1-780, 4CR1-781, 4CR-1-781, 4CR1-785, 4CR-1-785, 4CR1-902, 4CR-1-902, 4CR1-920, 4CR-1-920, 4CR1-930, 4CR-1-930, 4CR2-643, 4CR-2-643, 4CR2-650, 4CR-2-650, 4CR2-681, 4CR-2-681, 4CR2-700, 4CR-2-700, 4CR2-702, 4CR-2-702, 4CR2-705, 4CR-2-705, 4CR2-751, 4CR-2-751, 4CR3-648, 4CR-3-648, 4CR3-650, 4CR-3-650, 4CR3-670, 4CR-3-670, 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, 4CR6-657, 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, 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, 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, 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, 4CR57-170, 4CR-57-170, 4CR63-642, 4CR-63-642, 4CR63-644, 4CR-63-644, 4CR63-654, 4CR-63-654, 6CR42-171, 6CR-42-171, SL10A-625