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Schneider Electric A9R21492 — Residual Current Breakers (RCCB/RCBO)

Schneider Electric A9R21492 Acti9 RCCB-ID, 125 A 30 mA 4P RC

MPNA9R21492
Active

Schneider Electric Acti9 RCCB-ID, 4P, 125 A, 30 mA, Type A, 400 V AC, instantaneous, IP20/IP40, 35 mm DIN rail.

$744.12 – $1,406.93Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

A9R21492 — Residual Current Protection
ParameterValue
Earth-leakage sensitivity (IΔn)30 mA
Earth-leakage protection class / typeType A
Earth-leakage trip time delayInstantaneous
Residual-current tripping technologyVoltage independent
Local signalling / indicationRed/green indicator Trip indicator
A9R21492 — Electrical Ratings
ParameterValue
Rated current (In)125 A
Rated operational voltage (Ue)400 V AC 50 Hz conforming to IEC/EN 61008-1 400 V AC 50 Hz conforming to IEC/EN 61008-2-1
Poles description4P
Neutral pole positionLeft
Network typeAC
Network frequency50 Hz
Rated insulation voltage (Ui)400 V AC 50 Hz conforming to IEC/EN 61008-1 400 V AC 50 Hz conforming to IEC/EN 61008-2-1
Rated impulse withstand voltage (Uimp)4 kV conforming to IEC/EN 61008-1 4 kV conforming to IEC/EN 61008-2-1
Device location in systemOutgoer
Electrical durability2000 cycles
Mechanical durability (operating cycles)5000 cycles
A9R21492 — Identification
ParameterValue
Product nameActi9 RCCB-ID
Product / component typeResidual current circuit breaker (RCCB)
Product range / familyActi9
Device short nameRCCB-ID
A9R21492 — Mechanical
ParameterValue
Mounting support35 mm symmetrical DIN rail
Mounting modeFixed
Control typeToggle
Width in 9 mm modules8
Terminal connectionsTunnel type terminals2 cable(s) 1.5...16 mm² flexible Tunnel type terminals2 cable(s) 1.5...16 mm² rigid Tunnel type terminals1 cable(s) 1.5...50 mm² rigid Tunnel type terminals1 cable(s) 1.5...35 mm² flexible Tunnel type terminals1 cable(s) 1.5...35 mm² flexible with ferrule Tunnel type terminals2 cable(s) 1.5...16 mm² flexible with ferrule
Wire stripping length11 mm
Terminal tightening torque3 N.m
Width72 mm
Height86 mm
Depth76 mm
A9R21492 — Environmental
ParameterValue
Operating ambient temperature-25...40 °C
Storage ambient temperature-40...85 °C
IP degree of protectionIP20 conforming to IEC/EN 60529 IP40 (modular enclosure) conforming to IEC/EN 60529
Pollution degree3
A9R21492 — Approvals
ParameterValue
StandardsIEC/EN 61008-1 IEC/EN 61008-2-1

Product details

125 A 4P RCCB for 400 V AC distribution boards

The Schneider Electric A9R21492 is a 4-pole Acti9 RCCB-ID residual current circuit breaker rated at 125 A with 30 mA earth-leakage sensitivity. The instantaneous trip characteristic (no intentional delay) makes it suitable for outgoing circuits where fast disconnection is required for shock protection. The IP20 enclosure is rated for clean indoor panels; the IP40 modular enclosure rating adds protection against tools and small wires during installation.

Breaking capacity and selectivity coordination

The rated breaking and making capacity Im = 1250 A at both 400 V and 230 V. This is the short-circuit withstand capability of the RCCB itself — it is not a current-limiting device, so upstream protection (MCB or fuse) must coordinate to keep fault energy within the RCCB's rating. The rated insulation voltage Ui = 400 V AC matches the operational voltage.

Neutral is on the left. The red/green trip indicator and padlock provision give visual and physical isolation confirmation for lockout/tagout procedures. Wire stripping length is 11 mm. The connection pitch is 18 mm between phases.

Frequently asked questions

What is the A9R21492 used for?

It is a 4-pole residual current circuit breaker (RCCB) for 400 V AC 50 Hz distribution boards, rated 125 A with 30 mA Type A earth-leakage protection. It provides shock protection and fire protection against earth faults on outgoing circuits in commercial and industrial installations.

What compliance standards does the A9R21492 meet?

It is designed to IEC/EN 61008-1 and IEC/EN 61008-2-1, carries a VDE quality label, and has IP20/IP40 enclosure protection per IEC/EN 60529.

Where can I buy the A9R21492?

This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time.

MPN
A9R21492