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Schneider Electric miniature circuit breaker 10A single pole grey plastic housing toggle switch

Schneider Electric

Schneider Electric Miniature Circuit Breaker M9F21110 10A 1 Pole

SKU CH-126H-484RS

Miniature circuit breaker rated 10 A with a single pole for line protection

  • Product typeCircuit Breaker Accessories
  • Rated 10 A for reliable single-phase protection
  • Single-pole design simplifies panel layout
  • Miniature format saves space in tight enclosures
  • Schneider Electric quality ensures consistent trip performance
  • First listed January 30 2020 for current compliance

Schneider Electric 10A Miniature Breaker

This Schneider Electric M9F21110 is a single-pole miniature circuit breaker rated at 10 amps. It provides overcurrent protection for electrical circuits in residential and commercial installations. The unit is supplied new and was first listed by the manufacturer on 30 January 2020. It functions as a circuit breaker accessory within a distribution board.

Suits 10A single-pole protection needs

Installers fitting a 10 amp single-pole breaker for lighting or socket circuits will find this device matches the requirement. It is not suitable for circuits requiring a higher current rating, multi-pole configuration, or residual current protection. Buyers needing different amperage or pole counts must select an alternative model.

10 amp single-pole rating decides fit

The defining specification is the 10A, 1-pole rating marked on the M9F21110. This value must match the circuit design and the conductor size it protects. Verify the required amperage and pole count before purchase to ensure correct application.

How it compares

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

Price $68.99
Pricier than about 59% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameSchneider Electric
Product typeCircuit Breaker Accessories

Questions about this item

How is the 1 pole 10 A breaker mounted and what step is often missed?

Clip the unit onto a standard DIN rail until the latch clicks; the step often missed is verifying the latch is fully seated so the breaker cannot shift under vibration

What maintenance or replacement will the 10 A miniature circuit breaker need later?

No routine maintenance is required; replace the unit if it trips repeatedly without an overload or if the toggle mechanism feels loose

What limit appears first on the 10 A single pole breaker during sustained use?

The 10 A thermal trip curve is the first limit reached under continuous load, opening the circuit before the magnetic element operates

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