Moeller Thermal Overload Relays

Z overload relays offer motor protection in the event of single phasing or overload. Their auxiliary contacts disconnect the motor contactor and signal the fault. These relays can also be used for protecting EEx e motors.

The Z relays have been improved and modified for the new xStart system: engineering and inventory management have been facilitated by the reduction in the number of types.

Z thermal overload relays can be mounted directly on DIL M contactors up to 250 A. When required, the relay can also be installed separately.

Setting range of overload trip in A For use with contactors
DILEM DILM7 - DILM12 DILM17 - DILM32 DILM40 - DILM65 DILM80 - DILM170
  Moeller Thermal Overload Relay for use with DILEM Moeller Thermal Overload Relay for use with DILM7 - DILM12 Moeller Thermal Overload Relay for use with DILEM17 - DILM32 Moeller Thermal Overload Relay for use with DILEM40 - DILM65 Moeller Thermal Overload Relay for use with DILEM80 - DILM170
0.1 - 0.16 ZE - 0.16 ZB12-0.16 ZB32-0.16    
0.16 - 0.24 ZE - 0.24 ZB12 - 0.24 ZB32 - 0.24    
0.24 - 0.4 ZE - 0.4 ZB12 - 0.4 ZB32 - 0.4    
0.4 - 0.6 ZE - 0.6 ZB12 - 0.6 ZB32 - 0.6    
0.6 - 1 ZE - 1 ZB12 - 1 ZB32 - 1    
1 - 1.6 ZE - 1.6 ZB12 - 1.6 ZB32 - 1.6    
1.6 - 2.4 ZE - 2.4 ZB12 - 2.4 ZB32 - 2.4    
2.4 - 4 ZE - 4 ZB12 - 4 ZB32 - 4    
4 - 6 ZE - 6 ZB12 - 6 ZB32 - 6    
6 - 9 ZE - 9 - -    
6 - 10   ZB12 - 10 ZB32 - 10 ZB65 - 10  
9 - 12 - ZB12 - 12 - -  
10 - 16     ZB32 - 16 ZB65 - 16  
12 - 16   ZB12 - 16 - - -
16 - 24 - - ZB32 - 24 ZB65 - 24  
24 - 32 - - ZB32 - 32 -  
24 - 40 - - - ZB65 - 40 -
25 - 35 - - - - ZB150 - 35
35 - 50 - - - - ZB150 - 50
40 - 57 - - - ZB65 - 57 -
50 - 65 - - - ZB65 - 65 -
50 - 70 - - - - ZB150 - 70
70 - 100 - - - - ZB150 - 100
95 - 125 - - - - ZB150 - 125
120 - 150 - - - - ZB150 -150
145 - 175 - - - - ZB150 - 175

All Moeller thermal overload relays have phase failure sensitivity to IEC/EN 60947
Each has an electrically separate pair of control circuit contacts : 1 N/O + 1 N/C