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NOARK® Electric B1 UL489 miniature circuit breakers are available in a complete range of amperages from 0.5A to 32A. Standard ratings of 10 kA at 480Y/277 Vac and 10 kA at 125 Vdc. These are suitable for branch circuit protection. 5-Year limited warranty.

Unit of Measure

Specifications

Brands

 N/A NOARK®

Number of Poles

 N/A 1

Rated Current

 N/A 0.5 A

Alternating Current (AC) Voltage

 N/A 277 V480 V

Tripping Curve

 N/A C Curve (5-10 in.)

Termination Type

 N/A Box Lugs

Features

Features

 N/A
  • Breakers mount on standard 35 mm DIN rail
  • Can be used in UL 489 or cUL under CSA C22.2 No. 5 applications
  • Field installable shunt trip and auxiliary switch
  • Available with provisions for ring tongue terminals
  • Module width of only 0.71 in (18 mm) per pole
  • Contact position indicator (red/green)
  • Possibility for locking the toggle in ON or OFF position

Typical Applications

Typical Applications

 N/A Branch Circuit Protection
  • Convenience receptacle circuits (internal/external)
  • Motor control circuits
  • Load circuits leaving the equipment (external)
  • HVACR equipment: heating, ventilation, air conditioning, refrigeration (internal/external)
  • PLC I/O points
  • Power supplies
  • Control instrumentation
  • Relays
  • UPS
  • Power conditioners

Certifications

Certifications

 N/A UL 489 File Number E355392 / IEC 60947-2

Standard for MCCB for feeder and branch circuit protection.
  • cUL under CSA C22.2 No. 5-16 standard for branch circuit protection.
  • UL 489 file number E355392 standard for connection terminals which allows the user to apply field wiring directly to the breaker.
  • IEC 60947-2 standard for industrial applications of circuit protection.
RoHS
  • These devices are RoHS compliant.

Downloads

Certification

 N/A B1H Series Miniature Circuit Breakers (UL 489 B1NH Certificate NOARK)

White Paper

 N/A Underwriters Laboratories (UL 489) Miniature Circuit Breakers (MCB vs Fuse White Paper NOARK)

3D CAD Drawing STP

 N/A B1H Series 0.5 Ampere (A) Rated Current and 277 Volt (V) Alternating Current (AC) Voltage Miniature Circuit Breaker (CAD Step File)

DWG - 2D CAD Drawing

 N/A B1H Series 0.5 Ampere (A) Rated Current and 277 Volt (V) Alternating Current (AC) Voltage Miniature Circuit Breaker (CAD Drawing)

DXF - 2D CAD Drawing

 N/A B1H Series 0.5 Ampere (A) Rated Current and 277 Volt (V) Alternating Current (AC) Voltage Miniature Circuit Breaker (Drawing -DXF)

PDF - 2D CAD Drawings

 N/A B1H Series 0.5 Ampere (A) Rated Current and 277 Volt (V) Alternating Current (AC) Voltage Miniature Circuit Breaker (Downloadable)

XT - 3D CAD Drawing

 N/A B1H Series 0.5 Ampere (A) Rated Current and 277 Volt (V) Alternating Current (AC) Voltage Miniature Circuit Breaker (CAD XT File)