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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.

How it compares

Measured against everything we stock in Breaker Panels & Circuit Protection, at today’s prices. Recalculated every night.

Price $129.99
Pricier than about 63% of the 25 comparable items (median $114.99).

Specifications

Product
Brand nameSCHNEIDER 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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