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Siemens 3VA1112-5MH32-0BA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1112-5MH32-0BA0 SENTRON MCCB, 125 A, 3-Pole, UVR

MPN3VA1112-5MH32-0BA0

Siemens SENTRON 3VA1112-5MH32-0BA0, molded case circuit breaker, 3-pole, 125 A (40 °C), TM120M overcurrent release, undervoltage release, 187 kA at 240 V.

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

3VA1112-5MH32-0BA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA11125MH320AA0
3VA1112-5MH32-0BA0 — Ratings
ParameterValue
Number of poles3
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
Current at 40 °C125 A
Current at 45 °C125 A
Current at 50 °C125 A
Current at 55 °C122 A
Current at 60 °C120 A
Current at 65 °C117 A
Current at 70 °C114 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 V7.5 kA
Breaking capacity at 690 V7.5 kA
Power loss, max.30.6 W
3VA1112-5MH32-0BA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM120M
Overcurrent protection functionI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1112-5MH32-0BA0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1112-5MH32-0BA0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA1112-5MH32-0BA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1112-5MH32-0BA0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.20 000
Height130 mm
Width76.2 mm
Depth70 mm
Height (in)5.12 in
Width (in)3 in
Depth (in)2.76 in

Product details

SENTRON 3VA1112-5MH32-0BA0 — starter-protection MCCB with undervoltage release

Rated 125 A at 40 °C with a TM120M thermal-magnetic release, it carries a 187 kA interrupting rating at 240 V, dropping to 121 kA at 415 V and 75.6 kA at 440 V, so it handles substantial fault energy in low-voltage distribution.

The 125 A rating holds flat from 40 °C through 50 °C, then derates gradually to 114 A at 70 °C — a thermal curve that matches the SENTRON family and keeps the breaker usable in warm enclosures without oversizing. Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a 3-pole footprint that fits standard SENTRON 3VA mounting plates and panel cutouts.

Deployment context — panel and motor branch

It's sized for motor starter protection, so it pairs with a contactor and overload relay upstream of a pump, fan, or compressor.

Frequently asked questions

What is the breaking capacity of 3VA1112-5MH32-0BA0 at different voltages?

187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 7.5 kA at both 500 V and 690 V — so it's a high-interrupting-capacity MCCB suitable for strong fault-current sources at low voltage.

Does 3VA1112-5MH32-0BA0 have an undervoltage release?

Yes, it includes an undervoltage release (UVR) as a built-in auxiliary release, which trips the breaker when control voltage drops below the dropout threshold.

Where can I buy 3VA1112-5MH32-0BA0 and get current pricing?

This part is sourced to order against an RFQ through independent distribution. Submit a request for quote to confirm availability and current pricing.

Will 3VA1112-5MH32-0BA0 fit in a panel designed for 3VA1112-5EE32-0AA0?

Both are 3-pole SENTRON 3VA breakers with the same frame size, so the 130 x 76.2 x 70 mm footprint matches. The difference is the release type and accessories — verify that the TM120M thermal-magnetic curve and UVR are functionally equivalent for your application before substituting.

MPN
3VA1112-5MH32-0BA0