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Dayton NDB2T-63 B-Curve 1-Pole UL489 Miniature Circuit Breaker - B-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
DaytonB-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

Dayton NDB2T-63 B-Curve 1-Pole UL489 Miniature Circuit Breaker

The DAYTON IEC Miniature Circuit Breaker (SKU 3G-OTH-21763) is a 2 A, B-Curve, 1-pole UL489 DIN rail-mount unit from the NDB2T-63 series. It is rated for 277V AC and 48V DC with a maximum AIR rating of 10kA at 277V…

SKU 3G-OTH-21763

Brand
Dayton
Item
NDB2T-63 B-Curve 1-Pole UL489 Miniature Circuit Breaker
Category
B-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Dayton
Series
NDB2T-63
Type
10kA at 277V AC, Lug, NDB2T-63 B2/1 L, AC/DC
DC
48V
Max. AIR Rating
10kA at 277V AC
AC Voltage Rating
277V AC
DC Voltage Rating
48V DC
Terminal Connection
Lug

Technical Documents

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Dayton Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DAYTON IEC Miniature Circuit Breaker (SKU 3G-OTH-21763) is a 2 A, B-Curve, 1-pole UL489 DIN rail-mount unit from the NDB2T-63 series. It is rated for 277V AC and 48V DC with a maximum AIR rating of 10kA at 277V AC, and features lug terminal connections.

Frequently Asked Questions

What is the DAYTON IEC Miniature Circuit Breaker used for?

The DAYTON NDB2T-63 B2/1 L miniature circuit breaker protects branch circuits in industrial control panels, HVAC equipment, and lighting systems. Its B-Curve trip characteristic suits resistive and lighting loads, while the 48V DC rating supports control circuits and battery-backed applications.

What are the specifications of the DAYTON circuit breaker?

The DAYTON is a 2 A, 1-pole UL489 DIN rail-mount miniature circuit breaker from the NDB2T-63 series. It is rated 277V AC and 48V DC with a 10kA interrupting capacity at 277V AC. Terminal connections are lug type, and it features a B-Curve trip characteristic.

Where to buy the DAYTON miniature circuit breaker worldwide?

3G Electric supplies the DAYTON miniature circuit breaker to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this NDB2T-63 series unit.

How to install a DAYTON NDB2T-63 DIN rail circuit breaker?

Snap the DAYTON NDB2T-63 breaker onto a standard 35 mm DIN rail until it locks. Connect line and load wires to the lug terminals, torquing to the manufacturer's specification. Ensure the breaker is off before wiring. Follow local electrical codes and the product's installation sheet.

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 ul489 din rail-mount miniature circuit breakers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
This B-curve, 2-pole miniature circuit breaker is UL489 listed for DIN rail mounting. Rated 6 A with a maximum AIR of 10kA at 480V AC, it accommodates AC voltage up to 480V AC and DC voltage up to 96V DC. Lug terminal connections are provided. Typical applications include overcurrent protection in industrial control panels, HVAC equipment, and machinery for resistive and lighting loads
Dayton
This B-curve, 2-pole miniature circuit breaker is UL489 listed for DIN rail mounting. Rated 6 A with a maximum AIR of 10kA at 480V AC, it accommodates AC voltage up to 480V AC and DC voltage up to 96V DC. Lug terminal connections are provided. Typical applications include overcurrent protection in industrial control panels, HVAC equipment, and machinery for resistive and lighting loads
This 3-pole miniature circuit breaker from the NDB2T-63 series features a B-Curve trip characteristic for overcurrent protection in branch circuits. Rated 10A with a maximum interrupting rating of 10kA at 480V AC, it mounts on standard DIN rails and uses lug terminals. Suitable for resistive and lighting loads in industrial and commercial electrical panels
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This 3-pole miniature circuit breaker from the NDB2T-63 series features a B-Curve trip characteristic for overcurrent protection in branch circuits. Rated 10A with a maximum interrupting rating of 10kA at 480V AC, it mounts on standard DIN rails and uses lug terminals. Suitable for resistive and lighting loads in industrial and commercial electrical panels
This 1-pole miniature circuit breaker from the NDB2T-63 series features a C-curve trip characteristic and is UL489 listed. Rated 10 A at 277V AC and 48V DC with a maximum interrupting rating of 10 kA at 277V AC. Terminals are lug type for secure wiring. Suitable for overcurrent protection in branch circuits, lighting circuits, and industrial control panels mounted on DIN rail
Dayton
This 1-pole miniature circuit breaker from the NDB2T-63 series features a C-curve trip characteristic and is UL489 listed. Rated 10 A at 277V AC and 48V DC with a maximum interrupting rating of 10 kA at 277V AC. Terminals are lug type for secure wiring. Suitable for overcurrent protection in branch circuits, lighting circuits, and industrial control panels mounted on DIN rail
This 1-pole miniature circuit breaker is UL489 listed for DIN rail mounting. It features a C-curve trip characteristic for moderate inrush loads and a lug terminal connection. Rated 2A, 277V AC with a maximum interrupting rating of 10kA at 277V AC, and 48V DC. Suitable for overcurrent protection in branch circuits, lighting, and control panels
Dayton
This 1-pole miniature circuit breaker is UL489 listed for DIN rail mounting. It features a C-curve trip characteristic for moderate inrush loads and a lug terminal connection. Rated 2A, 277V AC with a maximum interrupting rating of 10kA at 277V AC, and 48V DC. Suitable for overcurrent protection in branch circuits, lighting, and control panels
This 1-pole miniature circuit breaker features a C-Curve trip characteristic for overcurrent protection in circuits with moderate inrush currents. Rated 1A, it is UL489 listed for AC systems up to 277V AC and DC systems up to 48V DC, with a maximum interrupting rating of 10kA at 277V AC. The lug terminal connection facilitates wiring in industrial control panels, lighting circuits, and HVAC equipment. It mounts on standard DIN rails
Dayton
This 1-pole miniature circuit breaker features a C-Curve trip characteristic for overcurrent protection in circuits with moderate inrush currents. Rated 1A, it is UL489 listed for AC systems up to 277V AC and DC systems up to 48V DC, with a maximum interrupting rating of 10kA at 277V AC. The lug terminal connection facilitates wiring in industrial control panels, lighting circuits, and HVAC equipment. It mounts on standard DIN rails
B-curve, 2-pole miniature circuit breaker for DIN rail mounting, UL489 listed. Rated 32 A, 240V AC with 10kA interrupting capacity, and 125V DC. Lug terminal connection. Suitable for overload and short-circuit protection in branch circuits and control panels
Dayton
B-curve, 2-pole miniature circuit breaker for DIN rail mounting, UL489 listed. Rated 32 A, 240V AC with 10kA interrupting capacity, and 125V DC. Lug terminal connection. Suitable for overload and short-circuit protection in branch circuits and control panels

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This 1-pole miniature circuit breaker from the NDB2T-63 series features a B-curve trip characteristic for 10 A protection. Rated 277V AC and 48V DC with a maximum interrupting rating of 10kA at 277V AC, it uses lug terminals. Suitable for DIN rail mounting in distribution panels and lighting systems
Dayton
This 1-pole miniature circuit breaker from the NDB2T-63 series features a B-curve trip characteristic for 10 A protection. Rated 277V AC and 48V DC with a maximum interrupting rating of 10kA at 277V AC, it uses lug terminals. Suitable for DIN rail mounting in distribution panels and lighting systems