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Small white DIN-rail circuit breaker with black toggle, compact rectangular body, grey terminal lugs visible

Dayton

Dayton 33V886 NDB2T-63 C1/1 L Circuit Breaker 1A 1P

SKU CH-1JD3-KTR2Z

IEC miniature circuit breaker rated 1 A, single-pole, C-curve, 277 V AC / 48 V DC, 10 kA interrupting, DIN-rail mount, thermal-magnetic trip, UL 489 listed, 12-28 AWG lug terminals

  • UL 489 listed for US and Canada compliance
  • Thermal magnetic trip protects against overload and short circuit
  • 10 kA interrupting capacity at 277 V AC
  • DIN rail mounting fits standard panel layouts
  • Accepts 12 to 28 AWG conductors

IEC Miniature Circuit Breaker

The Dayton 33V886 is a single-pole IEC miniature circuit breaker rated at 1 A with a C-curve thermal-magnetic trip. It mounts on a standard DIN rail and accepts wire from 28 AWG to 12 AWG via lug terminals. The unit carries UL 489 listing for the US and Canada and CE marking for European compliance.

Sustained overload behaviour

The thermal element responds to prolonged over-currents while the magnetic element clears short circuits up to 10 kA at 277 V AC. Rated for 277 V AC and 48 V DC, it maintains protection across the full temperature range without nuisance tripping on normal inrush. The 32 A frame size ensures consistent performance under continuous load.

Upgrade context

This breaker replaces legacy 1 A toggle devices that lack UL 489 certification or a 10 kA interrupting rating. The jump is worthwhile when a panel requires documented short-circuit withstand at 277 V AC or when a project demands CE-marked components for export. It is not suited for applications needing multi-pole ganged switching or higher frame ratings.

How it compares

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

Price $21.99
Cheaper than about 77% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameDAYTON

Questions about this item

How much heat and power loss should I expect from the 1 A thermal-magnetic breaker running continuously on a 277 V AC circuit?

At 1 A the thermal element carries rated current without nuisance tripping; the magnetic coil only operates on fault currents up to 10 kA, so steady-state dissipation stays low and the unit remains cool during all-day operation.

What mounting hardware and wire sizes must I already have to install this DIN-rail breaker?

The breaker clips onto standard DIN rail and uses integral lug terminals that accept solid or stranded copper from 12 AWG down to 28 AWG; no separate connectors or bus bars are required.

Will this single-pole 1 A C-curve breaker coordinate with an existing 32 A frame feeder breaker on the same DIN rail?

The C-curve magnetic trip (5-10 × In) provides selective discrimination against the larger 32 A frame upstream, so a downstream fault clears at the 1 A device first while the feeder remains closed.

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