Skip to main content
Log in
Schneider Electric A9N26478 — Miniature Circuit Breakers (MCB)

A9N26478 Acti9 MX Shunt Trip 12-24 V AC/DC, 18 mm

MPNA9N26478
Active

Schneider Electric Acti9 MX shunt trip release, A9N26478, 12-24 V AC/DC, 18 mm width, 73.5 mm depth, EN/IEC 60947-2.

$63.42 – $136.62Ref. price · indicative, final on quote
Schneider Electric A9N26478 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

A9N26478 — Identification
ParameterValue
Product range (series)Acti9
Product/component typeShunt trip release
A9N26478 — Mechanical
ParameterValue
Mounting support35 mm symmetrical DIN rail
Mounting modeFixed
Terminal connection typeScrew clamp terminal (bottom) - 2 cable(s) 1.5 mm² - flexible Screw clamp terminal (bottom) - 2 cable(s) 1.5 mm² - flexible with ferrule Screw clamp terminal (bottom) - 1 cable(s) 0.5...2.5 mm² - rigid
Terminal tightening torque1 N.m bottom
Wire stripping length9 mm for bottom connection
Local signalling/indicationAction indicator
Width18 mm
Height82.5 mm
Depth73.5 mm
Number of 9 mm pitches2
A9N26478 — Environmental
ParameterValue
Operating ambient temperature-25...50 °C
Storage ambient temperature-40...85 °C
Relative humidity95 % at 55 °C
Tropicalisation class2 conforming to EN/IEC 60947-2
A9N26478 — Approvals
ParameterValue
StandardsEN/IEC 60947-2

Product details

Shunt trip for Acti9 MCBs

The A9N26478 is a shunt trip release from the Schneider Electric Acti9 range, designed to remotely trip a compatible miniature circuit breaker when the control voltage is applied. The 18 mm width matches a single modular DIN-rail pitch, so it occupies one slot on the 35 mm symmetrical DIN rail alongside the breaker it controls.

The 12-24 V AC/DC control voltage covers standard 24 V control transformers and 24 V DC power supplies used in most industrial panels. The 18 mm width (one modular pitch) and 73.5 mm depth fit the standard Acti9 DIN-rail footprint — no extra space needed beyond the breaker's own slot. The screw-clamp terminals accept up to 2.5 mm² rigid or 1.5 mm² flexible wire, with a 9 mm strip length and 1 N·m tightening torque, matching typical panel wiring practice.

Frequently asked questions

What is the control voltage for A9N26478?

The control voltage is 12-24 V AC (50/60 Hz) or 12-24 V DC, covering both AC and DC control circuits.

What is the width of A9N26478?

The width is 18 mm, which is one modular DIN-rail pitch, so it occupies a single slot on a 35 mm DIN rail.

What compliance documentation does A9N26478 meet?

The shunt trip complies with EN/IEC 60947-2, the standard for low-voltage switchgear and controlgear. It also includes tropicalisation treatment per that standard.

Where can I buy A9N26478?

The A9N26478 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
A9N26478