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Schneider Electric DOM11343SNI-B — 1-Pole MCB (DIN Rail)

Schneider Domae DOM11343SNI-B MCB 1P 20A C-curve 4.5kA

MPNDOM11343SNI-B
Obsolete

Schneider Electric Domae series, miniature circuit breaker, 1 pole, 20 A rated current, C curve, 4.5 kA breaking capacity at 230/400 V AC, clip-on DIN rail mount, grey.

Schneider Electric DOM11343SNI-B datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

DOM11343SNI-B — Identification
ParameterValue
Product / component typeMiniature circuit-breaker
Product rangeDomae
Device short nameDomae MCB
Poles description1P
Number of protected poles1
Device applicationDistribution
DOM11343SNI-B — Electrical & Protection
ParameterValue
Rated current (In)20 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
DOM11343SNI-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
DOM11343SNI-B — Environmental
ParameterValue
Operating ambient temperature-25...60 °C
Storage ambient temperature-40...70 °C
IP degree of protectionIP20 conforming to IEC 60529
DOM11343SNI-B — Approvals
ParameterValue
Conformity standardsSNI 04-6507.1 IEC 60898-1

Product details

Its 4.5 kA breaking capacity at 230/400 V AC per IEC 60898-1 is sized for residential and light commercial distribution boards where fault levels stay under that threshold.

The tunnel terminals accept 1 to 25 mm² rigid or 1 to 16 mm² flexible copper, with a tightening torque of 2 N.m. The IP20 finger-safe enclosure suits enclosed distribution boards; not rated for wet or dusty environments.

This part is marked obsolete by the manufacturer. The paperwork has to be clean: the part carries IEC 60898-1 certification and SNI 04-6507.1, so compliance documentation for those standards is available on request.

Frequently asked questions

Where can I buy DOM11343SNI-B?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the breaking capacity of DOM11343SNI-B?

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

What compliance documentation does this brand provide for DOM11343SNI-B?

The part is certified to IEC 60898-1 and SNI 04-6507.1. RoHS, REACH, and UL documentation are not listed in the available records but can be requested at quote time.

MPN
DOM11343SNI-B