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Schneider Electric DOM12251SNI-B — 1-Pole MCB (DIN Rail)

DOM12251SNI-B Domae MCB 1P 2A C Curve 4.5 kA

MPNDOM12251SNI-B
Obsolete

Schneider Electric Domae series, miniature circuit breaker 1P, 2 A, C curve, 4.5 kA breaking capacity at 230/400 V AC, clip-on DIN rail mount, grey.

Schneider Electric DOM12251SNI-B datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

DOM12251SNI-B — Identification
ParameterValue
Product / component typeMiniature circuit-breaker
Product rangeDomae
Device short nameDomae MCB
Poles description1P
Number of protected poles1
Device applicationDistribution
DOM12251SNI-B — Electrical & Protection
ParameterValue
Rated current (In)2 A
Rated operational voltage (Ue)230/400 V AC 50/60 Hz
Tripping curve codeC
Breaking capacity (Icu / AIR)4.5 kA at 230/400 V AC 50/60 Hz conforming to IEC 60898-1
Network type (AC/DC)AC
Network frequency50/60 Hz
Control / actuation typeToggle
Mechanical durability (cycles)10000 cycles
DOM12251SNI-B — Mounting & Connection
ParameterValue
Terminal connections / wire rangeTunnel type terminals1...25 mm² rigid Tunnel type terminals1...16 mm² flexible
Mounting supportDIN rail
Mounting modeClip-on
Width18 mm
Height81 mm
Depth78.5 mm
Tightening torque (by circuit)2 N.m
DOM12251SNI-B — Environmental
ParameterValue
Operating ambient temperature-25...60 °C
Storage ambient temperature-40...70 °C
IP degree of protectionIP20 conforming to IEC 60529
DOM12251SNI-B — Approvals
ParameterValue
Conformity standardsIEC 60898-1 SNI 04-6507.1

Product details

The DOM12251SNI-B is a Schneider Electric Domae miniature circuit breaker — 1 pole, 2 A rated current, C curve, with a 4.5 kA breaking capacity at 230/400 V AC.

Single-module width (18 mm) fits tight panel layouts. Tunnel terminals accept 1…25 mm² rigid or 1…16 mm² flexible conductors; tighten to 2 N·m. IP20 finger-safe front. Compatible with comb busbars and distribution blocks for daisy-chaining phases.

Electrical and mechanical durability are both 10,000 cycles. Complies with IEC 60898-1 and SNI 04-6507.1.

Frequently asked questions

Where can I buy DOM12251SNI-B and how do I get a price?

We source this obsolete part through independent distribution channels. Submit an RFQ; availability and current pricing are confirmed at quote time.

What is the breaking capacity of DOM12251SNI-B?

4.5 kA at 230/400 V AC, 50/60 Hz, conforming to IEC 60898-1.

What is the rated current of DOM12251SNI-B?

2 A.

MPN
DOM12251SNI-B