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Siemens 3VA1225-5FF42-0HH0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1225-5FF42-0HH0 SENTRON MCCB, 125A, 4-Pole, 187kA

MPN3VA1225-5FF42-0HH0

Siemens SENTRON 3VA1225-5FF42-0HH0, molded case circuit breaker, 125 A, 4-pole, 187 kA interrupting at 240 V, line protection design, with shunt trip and auxiliary switches.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3VA1225-5FF42-0HH0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA12255FF420AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AB12
3VA1225-5FF42-0HH0 — Ratings
ParameterValue
Number of poles4
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
Current at 40 °C250 A
Current at 45 °C250 A
Current at 50 °C250 A
Current at 55 °C243 A
Current at 60 °C237 A
Current at 65 °C230 A
Current at 70 °C223 A
Switching capacity classM
Breaking capacity at 240 V187 kA
Breaking capacity at 415 V121 kA
Breaking capacity at 440 V75.6 kA
Breaking capacity at 500 V30 kA
Breaking capacity at 690 V17 kA
Power loss, max.57 W
3VA1225-5FF42-0HH0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1225-5FF42-0HH0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1225-5FF42-0HH0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerYes
Trip indicatorYes
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts3
3VA1225-5FF42-0HH0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1225-5FF42-0HH0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.20 000
Height158 mm
Width140 mm
Depth70 mm
Height (in)6.22 in
Width (in)5.51 in
Depth (in)2.76 in

Product details

Part identity and what it does

Breaking capacity across voltages

Interrupting rating drops as voltage rises: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V.

Derating starts above 50 °C: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, 223 A at 70 °C. The 70 mm depth and 140 mm width mean it fits standard MCCB panel cutouts; the 158 mm height is typical for this frame size.

Auxiliary and release configuration

The shunt trip lets a remote PLC or E-stop circuit trip the breaker — common for emergency-off chains in conveyor or pump panels. Trip indicator and voltage trigger are present on the mechanism.

Frequently asked questions

Where can I buy 3VA1225-5FF42-0HH0 and what is the lead time?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here, but a quote request gets you a firm answer.

Will 3VA1225-5FF42-0HH0 drop into a panel specified around 3VA1110-5ED36-0AC0?

No — the 3VA1110-5ED36-0AC0 is a smaller frame (100 A, 3-pole) with different dimensions and a lower interrupting rating. The 3VA1225 is a 125 A, 4-pole frame with a 70 mm depth vs the 3VA1110's shallower profile. Panel cutouts and bus connections would need rework.

What are the key ratings for this MCCB?

125 A continuous, 4-pole, 187 kA interrupting at 240 V, insulation voltage 800 V. Thermal derating starts above 50 °C. Shunt trip and two auxiliary switches plus trip alarm are included.

MPN
3VA1225-5FF42-0HH0