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White Schneider Electric M9F42250 DIN-rail breaker, two toggle poles, screw terminals

Schneider Electric

Schneider Electric M9F42250 50A 2-pole C-curve miniature circuit breaker

SKU CH-HN0F-XDWG1

A 50 A, two-pole C-curve breaker rated 14 kA at 240 V AC for DIN-rail branch-circuit protection

  • Protects branch circuits with 50 A thermal-magnetic trip
  • Interrupts up to 14 kA at 120/240 V AC
  • Fits standard DIN rail for quick panel mounting
  • Accepts 18 AWG to 2 AWG conductors via screw clamps
  • Meets UL 489 safety standard for reliable operation

Schneider Electric M9F42250 50A 2-pole C-curve MCB

This Schneider Electric miniature circuit breaker from the MULTI9 series provides branch circuit protection for single-phase AC systems. It mounts on a standard DIN rail and uses screw-clamp terminals for secure wiring connections.

Installers protecting 240V AC branch circuits

The C-curve thermal-magnetic trip suits general-purpose loads such as lighting and resistive heating. It is not rated for DC applications and does not carry a DC voltage rating, so DC circuits require a different device.

14 kA interrupting rating at 120/240 V AC

This maximum AIR rating determines whether the breaker can safely clear the prospective fault current at the installation point. Verify the available short-circuit current against the 14 kA figure before specifying this device.

Highlights

  • Protects branch circuits with 50 A thermal-magnetic trip
  • Interrupts up to 14 kA at 120/240 V AC
  • Fits standard DIN rail for quick panel mounting
  • Accepts 18 AWG to 2 AWG conductors via screw clamps
  • Meets UL 489 safety standard for reliable operation

Specifications

BrandSCHNEIDER ELECTRIC

Questions about this item

Does the 14 kA interrupting rating generate extra heat or noise during continuous 50 A operation?

The thermal-magnetic trip runs silently with no moving fan; heat rise is normal for a 50 A device in a ventilated enclosure.

What mounting hardware and wire sizes must I already have to install the M9F42250?

It clips onto DIN rail and accepts 18 AWG to 2 AWG conductors in its screw-clamp terminals.

Will this 2-pole C-curve breaker coordinate with older 60 A or 63 A frame panels I want to keep?

The 63 A frame size and 14 kA AIR at 120/240 V AC match legacy C60BP panels for direct replacement.

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