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Dayton 3-pole miniature circuit breaker, grey DIN-rail housing with three toggle actuators

Dayton

Dayton 33V910 IEC Miniature Circuit Breaker 20A 3-Pole NDB2T-63 B20/3 L Series

SKU CH-PTZD-A33A6

Three-pole IEC miniature circuit breaker rated 20 A with B-curve thermal-magnetic trip, 10 kA interrupting at 480 V AC, DIN-rail mount, UL 489 and CE listed

  • Thermal-magnetic trip protects against overload and short circuits
  • Three-pole design breaks all phases at 20 A
  • 10 kA interrupting rating at 480 V AC
  • DIN-rail mounting fits standard enclosures
  • UL 489 listed and CE marked for US and Canada

Product Identity

The Dayton 33V910 is an IEC miniature circuit breaker rated at 20 A with three poles and a B-curve thermal-magnetic trip. It mounts on a standard DIN rail and carries UL 489 and CE listings for use in commercial and industrial panels.

Installation Checklist

Confirm the panel operates at 480 V AC or lower and that the available fault current does not exceed 10 kA at that voltage. Verify DIN rail space for a 4.6 in length by 2.13 in width footprint and ensure conductors fall between 50 AWG and 66 AWG for the lug terminals.

Suitability

This breaker suits three-phase circuits needing 20 A overload and short-circuit protection with a B-curve response. It is not for DC systems, for applications above 480 V AC, or for installations requiring a higher interrupting rating than 10 kA.

How it compares

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Price $52.99
Typical for this category: the median of 1,135 items is $54.99.

Specifications

Product
Brand nameDAYTON

Questions about this item

Does the 33V910 breaker come with DIN-rail clips or lug terminals in the box, or do I need to order them separately?

The breaker mounts on a DIN rail and uses lug terminals; no separate clips or terminals are mentioned in the specifications.

Should I choose the B-curve 20 A version or a different curve for a 480 V AC three-phase motor load?

The B-curve 20 A, 3-pole unit is rated for 480 V AC with a 10 kA interrupting rating, suitable for general three-phase circuits.

What does the 10 kA at 480 V AC rating mean when the breaker is installed in a real panel?

It means the breaker can safely interrupt a short-circuit current up to 10 kA on a 480 V AC three-phase supply without damage.

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