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Dayton Supplementary Protector: 20 A Amps, 5kA at 277V AC, Screw Clamp, NDB2-63 - B-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
DaytonB-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Dayton Supplementary Protector: 20 A Amps, 5kA at 277V AC, Screw Clamp, NDB2-63

The DAYTON IEC Supplementary Protector (SKU 5ZUW4) is a B-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protector rated for 20 A Amps. It features a Max. AIR Rating of 5kA at 277V AC, an AC Voltage Rating of 277V…

SKU 3G-OTH-20496

Brand
Dayton
Item
Supplementary Protector: 20 A Amps, 5kA at 277V AC, Screw Clamp, NDB2-63
Category
B-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

Dayton
Manufacturer Part Number
5ZUW4
Series
NDB2-63
Type
5kA at 277V AC, Screw Clamp, NDB2-63, B
AC
277V
Curve Type
B
Max. AIR Rating
5kA at 277V AC
AC Voltage Rating
277V AC
DC Voltage Rating
Not Rated
Terminal Connection
Screw Clamp
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Dayton Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DAYTON IEC Supplementary Protector (SKU 5ZUW4) is a B-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protector rated for 20 A Amps. It features a Max. AIR Rating of 5kA at 277V AC, an AC Voltage Rating of 277V AC, and a Screw Clamp terminal connection. This unit is part of the NDB2-63 series and is not rated for DC voltage.

Frequently Asked Questions

What is the DAYTON IEC Supplementary Protector 5ZUW4 used for?

The DAYTON IEC Supplementary Protector 5ZUW4 is used for overcurrent protection in industrial control panels, HVAC equipment, and lighting circuits. Its B-curve trip characteristic makes it suitable for resistive and light inductive loads where inrush currents are low. It mounts on a standard DIN rail and is UL1077 listed for supplementary protection.

What are the specifications of the DAYTON 5ZUW4 supplementary protector?

The DAYTON 5ZUW4 is a 20 A, 1-pole supplementary protector with a B-curve trip characteristic. It has a maximum AIR rating of 5kA at 277V AC and an AC voltage rating of 277V AC. The terminal connection is screw clamp, and it is part of the NDB2-63 series. It is not rated for DC voltage.

Where to buy the DAYTON 5ZUW4 supplementary protector worldwide?

You can source the DAYTON 5ZUW4 supplementary protector through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive pricing and reliable sourcing for this NDB2-63 series protector.

How to install the DAYTON 5ZUW4 supplementary protector on a DIN rail?

To install the DAYTON 5ZUW4, snap it onto a standard 35 mm DIN rail by hooking the top clip and pressing down until it locks. Ensure the circuit is de-energized. Connect wires to the screw clamp terminals using a screwdriver, tightening to the torque specified on the device label. Verify polarity if required for your application.

Used in

Common applications for Dayton
HVAC ventilation — DAYTON centrifugal upblast roof exhaust fans (SKU 7M7U3) for kitchen exhaust systems
Mechanical power transmission — DAYTON HTD timing pulleys (SKU 404GV0) for conveyor belt drives
Process water handling — DAYTON self-priming centrifugal pumps (SKU 2ZXT4) for dewatering or transfer
Roofing and building services — DAYTON fixed ventilated roof curbs (SKU 4HX59) for filtered supply fan installations
Material handling — DAYTON latch assemblies (SKU 2KEN4) for electric chain hoist hook safety
Industrial air movement — DAYTON downblast roof exhaust fans (SKU 3HFL9) for clean air exhaust in manufacturing plants

Dayton Products

3G Electric supplies Dayton b-curve, 1-pole ul1077 din rail-mount supplementary protectors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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