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Circuit Breaker, 2 Pole, D-Curve, 20A, UL489

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  • Circuit Breaker, 2 Pole, D-Curve, 20A, UL489

Noark - B1H2D20

Alternate Part Number: 1000806

Quick Overview

Mini Circuit Breaker, 2P, D-Curve, 20A, UL489, 480Y/277VAC, 10 kA, Box Lug
$25.74

Standard Stock

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This is a Noark B1H series UL489 circuit breaker which has standard ratings of 10kA at 480Y/277VAC. 

Noark UL489 circuit breakers, including the B1H and B1N series, are designed for branch circuit protection. Applications include motor control circuits, load circuits leaving the equipment, HVAC, PLC I/O points, power supplies, UPS and power conditioners.

Noark also offers UL1077 miniature circuit breakers, the B1E series, which are suitable for supplementary protection. The B1E series replaced the Chint NB1 series.

All NOARK circuit breakers mount on standard 35 mm DIN rail. 

Additional Information
Part Number B1H2D20
Product Series B1H UL489
Poles 2 Pole
Trip Curve D Curve
Amp Rating 20 Amp
Voltage 480Y/277VAC
Type UL489
Short Circuit Capacity 10kA
Product Series B1H Series (Ex9B1H)
Availability Please Contact Us
Weight - lbs. 0.6500
Base Unit of Measure Each
Specification Tab
  • UL489 Listed miniature circuit breaker
  • Standard 35 mm DIN rail mounting
  • 10kA
  • 480Y/277VAC 
  • Suitable for branch circuit device protection
  • Trip-free design
  • Breaker cannot be defeated by holding the handle in the ON position
  • Captive screws cannot be lost
  • For use in applications for which UL 1077 or CSA C22.2 No.235 are also allowed
  • Great for motor control circuits, load circuits leaving equipment, HVAC, UPS and more
Resources

Need More Information?


  • UL489 Listed miniature circuit breaker

  • Standard 35 mm DIN rail mounting

  • 10kA

  • 480Y/277VAC 

  • Suitable for branch circuit device protection

  • Trip-free design

  • Breaker cannot be defeated by holding the handle in the ON position

  • Captive screws cannot be lost

  • For use in applications for which UL 1077 or CSA C22.2 No.235 are also allowed

  • Great for motor control circuits, load circuits leaving equipment, HVAC, UPS and more

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  • Phone: 847-658-8130
  • Fax: 847-658-0960

Marshall Wolf Automation, Inc.
923 South Main Street
Algonquin, IL 60102

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