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Schneider Electric 8 A two-pole C-curve DIN rail supplementary protector, toggle actuator, screw-clamp terminals

Schneider Electric

Schneider Electric M9F22208 8 A 2-pole C-curve supplementary protector

SKU CH-7JY6-3F03Q

IEC supplementary protector rated 8 A, 2-pole C-curve, 14 kA at 240 V AC, DIN-rail mount

  • 8 A two-pole C-curve protects branch circuits
  • 14 kA interrupting at 240 V AC handles high fault current
  • DIN-rail screw-clamp terminals accept 18–8 AWG wire
  • Compact 3.19 × 1.42 × 2.83 in fits tight panels
  • UL 1077 recognised for supplementary overcurrent protection

8 A DIN rail supplementary protector

The Schneider Electric M9F22208 is a two-pole C-curve supplementary protector rated at 8 A for 240/415/440 V AC circuits. It mounts on a standard DIN rail and uses screw-clamp terminals that accept wire from 18 AWG to 8 AWG. Thermal-magnetic trip action provides branch-circuit protection in industrial and commercial panels.

Suited for IEC branch-circuit protection.

This protector suits installers who need a UL 1077 recognised device with a 14 kA interrupting rating at 240 V AC for single-phase loads. It is not rated for DC voltage, so it cannot be used in battery or solar DC distribution. Buyers needing a main-circuit breaker or a higher pole count should select a different device.

Fits 3.19 in by 1.42 in DIN rail slot.

The unit measures 3.19 in long, 1.42 in wide and 2.83 in deep, occupying a single module width on the rail. Screw-clamp terminals simplify wiring without specialised tools. Its compact footprint leaves room for additional modules in crowded load centres while meeting IEC and UL 1077 requirements.

Highlights

  • 8 A two-pole C-curve protects branch circuits
  • 14 kA interrupting at 240 V AC handles high fault current
  • DIN-rail screw-clamp terminals accept 18–8 AWG wire
  • Compact 3.19 × 1.42 × 2.83 in fits tight panels
  • UL 1077 recognised for supplementary overcurrent protection

Specifications

BrandSCHNEIDER ELECTRIC

Questions about this item

What DIN-rail width and wire gauges does the M9F22208 accept?

It clips onto a standard DIN rail and its screw-clamp terminals take solid or stranded copper from 18 AWG up to 8 AWG.

Will the 14 kA AIR rating at 240 V AC coordinate with older C60SP breakers in the same panel?

Yes, the C-curve thermal-magnetic trip and 14 kA interrupting rating match the Series C60SP profile for selective coordination.

How can I verify the M9F22208 is protecting the circuit after installation?

Apply load up to 8 A and confirm the toggle stays closed; a sustained overload will trip the thermal-magnetic mechanism and move the toggle to the off position.

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