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Transparent two-pole DIN-rail circuit breaker with toggle actuator, 3.21 by 1.42 by 2.91 inches

Dayton

Dayton 5ZDZ1 NDB2Z-63 B6/2 6A 2 Pole 440V DC 10kA DIN Rail HVAC Control

SKU CH-4C7X-JYSSD

Two-pole 6 A supplementary protector rated 440 V DC with 10 kA interrupting capacity for DIN-rail mounting

  • ColorTransparent
  • 6 A thermal-magnetic trip protects circuits
  • 2-pole 440 V DC rating suits HVAC systems
  • 10 kA interrupting capacity handles fault currents
  • DIN-rail mount fits standard enclosures
  • UL 1077 supplemental protector meets safety standards

Product identity

The Dayton 5ZDZ1 is a two-pole supplemental protector rated for 6 A and 440 V DC with a 10 kA interrupting capacity. It is designed for DIN-rail mounting in HVAC control panels and similar industrial circuits.

Build and connections

The transparent housing meets UL 1077 and uses screw-clamp terminals that accept wire from 14 AWG up to 4 AWG. A toggle actuator provides manual switching, while the thermal-magnetic trip mechanism responds to both overload and short-circuit conditions. The unit measures 3.21 in long, 1.42 in wide and 2.91 in deep.

Upgrade context

This device replaces older supplemental protectors that lack a 10 kA rating at 440 V DC or that use non-DIN mounting styles. The jump is worthwhile when a panel requires higher interrupting capacity, a compact two-pole footprint, or screw-clamp terminals for larger conductors. It is not suited for applications needing AC voltage ratings, more than two poles, or a different trip curve.

Highlights

  • 6 A thermal-magnetic trip protects circuits
  • 2-pole 440 V DC rating suits HVAC systems
  • 10 kA interrupting capacity handles fault currents
  • DIN-rail mount fits standard enclosures
  • UL 1077 supplemental protector meets safety standards

Specifications

BrandDAYTON
ColorTransparent

Questions about this item

What DC voltage and interrupting rating does the NDB2Z-63 B6/2 breaker carry?

The breaker is rated for 440V DC with a maximum AIR rating of 10kA at that voltage.

What DIN rail and wire sizes does this 2-pole unit accept?

It mounts on standard DIN rail and accepts wire from 14 AWG up to 4 AWG via screw-clamp terminals.

How do you wire the thermal-magnetic trip correctly on a supplemental protector?

Connect line conductors to the marked line terminals; reversing line and load will prevent the thermal-magnetic trip from operating as intended.

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