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Siemens 3VM9908-0BB25 — Molded Case Circuit Breakers (MCCB)

Siemens 3VM9908-0BB25 SENTRON Undervoltage Release, 208-230V

MPN3VM9908-0BB25
Active

Siemens SENTRON 3VM9908-0BB25 undervoltage release, 208-230V AC 50/60Hz, 2 VA, 4 kV surge, pollution degree 3, overvoltage category III, for 3VM breakers to 630 A.

Siemens 3VM9908-0BB25 datasheet (PDF)
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

3VM9908-0BB25 — Identification
ParameterValue
Product designationAccessories
Brand / rangeSENTRON
3VM9908-0BB25 — Mechanical
ParameterValue
Height65.1 mm
Width25.7 mm
Depth28.8 mm
3VM9908-0BB25 — Other specifications
ParameterValue
AccessoriesAuxiliary release
Number of slots3
Stripped length10 mm
Degree of pollution3
Overvoltage categoryIII
Stripped length [In]0.4 in
Design of the productauxiliary release
Surge voltage resistance4 kV
Apparent power consumption (Maximum)2 VA

Product details

Undervoltage release for 3VM breakers to 630 A

The Siemens SENTRON 3VM9908-0BB25 is an undervoltage release — an auxiliary trip accessory designed for the 3VM molded-case breaker family up to 630 A.

The release measures 25.7 mm wide, 65.1 mm high, and 28.8 mm deep. It mounts inside the 3VM breaker accessory slot — no additional DIN-rail space is consumed. The stripped length for wiring is 10 mm (0.4 in). Three accessory slots are available on the 3VM frame; this release occupies one. Verify slot compatibility with any other auxiliary devices (shunt trip, alarm contacts) already installed or planned, as the mechanical interlock within the breaker limits which combinations fit.

Frequently asked questions

Where can I buy 3VM9908-0BB25 and get a price?

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

What is the closest functional second-source to 3VM9908-0BB25?

The 5SY4140-7 is a SENTRON miniature circuit breaker, not an undervoltage release — it serves a different function. The 3VM9908-0BB25 is a dedicated accessory for the 3VM breaker family; no direct second-source exists within the SENTRON line that performs the same undervoltage release role.

What compliance documentation does Siemens provide for 3VM9908-0BB25?

As a SENTRON accessory, the 3VM9908-0BB25 is designed to meet IEC/EN standards for overvoltage category III and pollution degree 3. Compliance documentation (declaration of conformity, RoHS, REACH) is available from Siemens upon request through the standard documentation portal.

MPN
3VM9908-0BB25