3VA27 molded case circuit breakers & 3WL10 air circuit breakers 
Manual, 10/2018, L1V30499596002-01 
91 
 
The internal and external accessories of the 3WL10 and the 3VA27 with stored energy 
operating mechanism are identical. In some cases, they may however differ from the the 
3VA27 with toggle operating mechanism.  
 
3WL10 
(stored energy operating 
mechanism) 
3VA27 
(stored energy operating 
mechanism) 
3VA27 
(toggle operating mecha-
nism) 
Accessories for connection 
✓  ✓  ✓ 
Undervoltage release (UVR) 
Spring charging motor (MO) 
Ready-to-close signaling 
✓  ✓  - 
Spring charged signaling 
✓  ✓  - 
Position signaling switch 
✓  ✓  ✓ 
Tripped signaling switch 
(TAS) - signals the tripped 
-  -  ✓ 
Auxiliary switch (AUX1-
✓  ✓  ✓ 
Auxiliary switch (AUX3-
✓  ✓  ✓ 
Tripped signaling switch 
✓  ✓  ✓ 
Tripped signaling switch via 
-  -  ✓ 
Leading changeover switch 
-  -  ✓ 
Mechanical operating cycles 
✓  ✓  - 
Position signaling switch 
✓  ✓  ✓ 
Breaker Connect module, 
external power supply 
✓  ✓  ✓