JC 1125 Limit Switches



JC - 1125 HEAVY DUTY LIMIT SWITCHES
  • TWENTY-FIVE CIRCUIT OPTIONS
  • 25 A 600 V A.C. OR D.C.
  • 70° OVERTRAVEL IN BOTH DIRECTIONS
  • IP 67 PROTECTION
  • OPERATES UP TO 107° C
  • IDEAL FOR APPLICATION REQUIRING EXTRA HEAVY INDUSTRIAL DUTY CONTACT RATINGS
  • HIGHER OPERATING AND RESET FORCES
  • RUGGED MECHANICAL CONSTRUCTION
  • WILL WITHSTAND HOT FALLING SAND UPTO 300° F
  • FOR ROUGH FOUNDRY APPLICATIONS AND HEAVY MACHINE TOOL , CONVEYOR, MILLS, FOUNDRIES, HEAVY BOILERS.
  • ACTUATION MODE CONVERSION FACILITY FOR LEFT-HEND, RIGHT-HAND OR MAINTAINED CONTACT ACTION. PLUS A COMPREHENSIVE SELECTION OF OPERATING LEVERS.

Model JC-1125 heavy industrial duty limit switch providing twenty five switching arrangements from eleven standard types Actuation mode conversion facility for left-hand, right-hand or maintained contact action. Rating up to 25 A lth 600 V. a.c. or d.c. plus a comprehsive selection of operating levers.

     Eleven standard switch types can be converted on site to provide for a total of twentyfive contact or circuit arrangements (as shown below).
Ordering reference
model
contact arrangement
(arrow indicated direction of lever movement)
Standard model
conversion required
Operating data
(refer to table, above)
Switch description
(viewed from the front of switch).
JC - 1125
BMK 9
(1)   As supplied   Data A   Snap action, Spring return
  Contacts: 1 n.c., 1 n.o.
  CW operation to 1 n.o. 1 n.c.
(2)   Revers return spring   Data A   Snap action, Spring return
  Contacts: 1 n.o., 1 n.c.
  CCW operation to 1 n.c. 1 n.o.
(3)   Remove return spring   Data A
  and
  Note 2 above
  Stay-put action Contacts: CCW position 1   n.c. 1n.o.
  or CW operation to 1 n.o. 1 n.c.
JC - 1125
BMK 18
(4)   As supplied   Data A   Snap action, Spring return
  Contacts: 2 n.o.
  CW operation to 2 n.c.
(5)   Revers return spring   Data A   Snap action, Spring return
  Contacts: 2 n.c.
  CCW operation to 2 n.o.
(6)   Remove return spring   Data A
  and
  Note 2 above
  Stay-put action
  Contacts: CCW position 2 n.o.
  or CW operation to 2 n.c.
JC 1125
BMK 27
(7)   As supplied   Data A   Snap action, Spring return
  Contacts 2 n.o.
  CCW operation to 2 n.c.
(8)   Revers return spring   Data A   Snap action, Spring return
  Contacts 2 n.c.
  CCW operation to 2 n.o.
(9)   Remove return spring   Data A
  and
  Note 2 above
  Stay-put action
  Contacts: CCW position 2 n.c.
  or CW position 2 n.o.
JC - 1125
BMK 36
(10)   As supplied   Data A   Snap action, Spring return
  Contacts 1 n.c. and 2 n.o.
  CW operation to 1 n.o., 2 n.c.
(11)   Revers return spring   Data A   Snap action, Spring return
  Contacts 2 n.c. and 1 n.o.
  CCW operation to 2 n.o., 1 n.c.
(12)   Remove return spring   Data A
  and
  Note 2 above
  Stay-put action
  Contacts: CCW position 1 n.c. 2 n.o.
  CW operation to 1 n.o. 2 n.c.
JC 1125
BMK 45
(13)   As supplied   Data A   Snap action, Spring return
  Contacts 2 n.o. and 1 n.c.
  CCW operation to 2 n.c., 1 n.o.
(14)   Revers return spring   Data A   Snap action, Spring return
  Contacts 2 n.c. and 1 n.o.
  CW operation to 2 n.o., 1 n.c.
(15)   Remove return spring   Data A
  and
  Note 2 above
  Stay-put action
  Contacts: CCW position 2 n.c. 1 n.o.
  or CW position to 2 n.o., 1 n.c
JC 1125
BMK 54
(16)   As supplied   Data B
  and
  Note 2 above
  Slow-make and break spring return   Contacts : 2 n.o. CW operation to 1 n.o.   1 n.c. or CCW operation to 1 n.o. 1n.c
(17)   Add two jumper wires   Data B
  and
  Note 2 above
  Slow-make and break spring return
  Contacts: 1 n.o.
  CW or CCW operation to 1 n.c.
JC 1125
BMK 63
(18)   As supplied   Data B
  and
  Note 2 above
  Slow-make and break spring return
  Contacts : 2 n.c. CW operation to 1 n.o.
  1 n.c. or CCW operation to 1 n.c., n.o.
(19)   Add two jumper wires   Data B
  and
  Note 2 above
  Slow-make and break spring return
  Contacts: 1 n.c.
  CW or CCW operation to 1 n.o.
JC 1125
BMK 72
(20)   As supplied   Data C
  and
  Note 2 above
  Slow-make and break spring return
  Contacts: 2 n.c.
  CW operation to 1 n.o, 1 n,c or CCW operation to 1 n.c, 1 n.o.
(21)   Add two jumper wires   Data C
  and
  Note 2 above
 Snap-action, spring return
Contacts: 1 n.o.
CW or CCW 1 n.c.
JC 1125
BMK 81
(22)   As supplied   Data C
  and
  Note 2 above
  Stay-put action
Contacts : 2 n.o. CW operation to 1 n.o.
1 n.c. or CCW operation to 1 n.c., 1 n.o.
(23)   Add two jumper wires   Data C
  and
  Note 2 above
Stay-put action
Contacts : 1 n.o.
CW or CCW operation to 1 n.c.
JC 1125
BMK 90
(24)   As supplied   Data B
  and
  Note 2 above
  Slow-make and break, spring return
  Contact : 2 n.o. 1 n.c. CW operation to 1 n.o.
  2 n.c. or CCW operation to 1 n.c., 2 n.o.
JC 1125
BMK 99
(25)   As supplied   Data B
  and
  Note 2 above
  Slow-make and break, spring return   Contact : 1 n.c., 2 n.o. CW operation to 2   n.o.
  1 n.c. or CCW operation to 2 n.c., 1 n.o.
 
Operating levers
Lever Length (mm)
Style A  
AA 38
AAI 2.5,4 mm roller) 38
AB 76
AC 32
AD 45
AH 51
AL 89
AM 102
AO 64
Style F  
FG
F1
64
76
Style LA  
LAA 1
LAH 1
LAO 1
38
51
64
Style R  
R (hub)
R9 (rod)
 
Style V  
VA  

Actuation mode convertion

Convertion is accomplished by reversal of lever return spring located below the back cover and shaft end bearing plate. For maintained contact the spring is removed always replace bearing plate. 

General data
Contact material silver
Mechanical life 10X106
Terminal type Screw clamp
Cable capacity (mm2) 1X2.5 mm2
Ambient temperature range 00 C To 1070 C
Minimum storage temperature -350 C
Maximum relative humidity 90% RH
 
Contact ratings
Make and break
Break (A)
Voltage Inductive Non-Inductive make (A)
(V) a.c. d.c. a.c.   d.c nductive
115 6      2 30      5 60
250 3      1 15      2 30
440 1.5   0.48 7.5     1 15
600 1.2   0.4 6         0.8 12
Continuous : 25 A 600V a/c. / d.c. (two circuit switches)
Note : Three circuit Switches rated to 300 V
 
Operating data
Contact arrangement A B C
Differential travel (deg) 11±2 4max 4max
Total travel both directions (deg) 75 75 75
Recommended
operational travel (deg)
20-35 10-25 10-25
Repetitive accuracy each switch (deg) ±0.03 - ±0.03
Actuating torque maximum (kgf m) 0.108 0.068 0.094
With maintained contact (kgf m) 0.032 - 0.032
Note 1 : All order references are for switches with metric threads.
Note 2 : Lever must not be allowed to snap back freely any over-travelled position with this contact arrangement.
APPROXIMATE DIMENSIONS NOT FOR CONSTRUCTION (DIMENSIONS IN M.M.)

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