Siemens SENTRON 3WL10 - Electromechanical and Auxiliary Accessories

Spring charging motor (MO)
The spring charging motor (MO) automatically charges the closing springs when they are
discharged. If no power supply is available, the springs must be charged manually with the
charging handle on the circuit breaker.
Technical speci󹪝cations AC DC Fuse determined from
characteristic curves
2)
Rated control supply
voltage U
s
24 to 30 V ✓ ✓ DIAZED fuse (operation‐
al class gL/gG) 10A TDz
(slow)
48 to 60 V ✓ ✓ DIAZED fuse (operation‐
al class gL/gG) 4A TDz
(slow)
100 to 130 V ✓ ✓
220 to 250 V ✓ ✓ DIAZED fuse (operation‐
al class gL/gG) 2A TDz
(slow)
Operating limits (acc. to IEC60947‑2) 85 to 110% U
s

Switch-on power 300 VA 300 W
Continuous power 100 VA 100 W
Make time
1)
200 ms
Charging time 7 s
1)
Make time = magnetization time: Time with voltage applied that the spring charging motor requires to
start charging. Charging the stored energy mechanism then takes approx. 7s.
2)
Miniature C-characteristic circuit breakers in accordance with VDE0641 with the same current rating
may be used as an alternative to fuses.
Note
The motor is always supplied with the spring charge signaling switch (S21), which signals the
state of the springs.
The use of the spring charging motor does not reduce the life, the operating cycles, and the
frequency of operation of the whole product.
Remote reset magnet (RR)
With the remote reset magnet (RR), the circuit breaker can be reset remotely when the trip unit
has opened the circuit breaker.
Deliberate resetting of the ETU by mechanical operation on the device or remote resetting
via the RR is necessary for safety after overcurrent tripping. All faults in the distribution board
should be cleared 󹪝rst.
Accessories
3.2Electromechanical accessories
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
98 Equipment Manual, 10/2023, L1V30499596002-03