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Miniature Circuit Breakers

Shop our wide selection of UL 489 miniature circuit breakers and UL 1077 supplementary protectors in both AC and DC voltages. They are available in one-, two- and three-pole versions with an amperage range up to 63A and in B, C or D trip curve options to meet your applications needs. Difference between UL 489 vs. UL 1077

Products 901-912 of 1197
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Altech Corp 1D50UM Miniature Circuit Breaker
Retail: $31.24
Price: $19.62

The Altech Corp 1D50UM is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 50
  • Poles: 1
  • Trip Curve: D
  • UL 508 Listed, UL, cUL, CSA
MFG Part# 1D50UM
Noark B1N2B50 Mini Circuit Breaker
Retail: $44.83
Price: $41.02

The Noark B1N2B50 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 50
  • Poles: 2
  • Trip Curve: B
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N2B50
Noark B1N2C50 Mini Circuit Breaker
Retail: $43.38
Price: $39.70

The Noark B1N2C50 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 50
  • Poles: 2
  • Trip Curve: C
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N2C50
Altech Corp 2C50UL Miniature Circuit Breaker
Retail: $82.45
Price: $51.79

The Altech 2C50UL is suitable for branch circuit device protection.

  • Terminal Type: Dual Connection Terminal (Ring and Box)
  • Amperage: 50
  • Poles: 2
  • Trip Curve: C
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# 2C50UL
Noark B1N2D50 Mini Circuit Breaker
Retail: $43.38
Price: $39.70

The Noark B1N2D50 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 50
  • Poles: 2
  • Trip Curve: D
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N2D50
Altech Corp 2B50UM Miniature Circuit Breaker
Retail: $62.46
Price: $39.24

The Altech Corp 2B50UM is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 50
  • Poles: 2
  • Trip Curve: B
  • UL 508 Listed, UL, cUL, CSA
MFG Part# 2B50UM
Altech Corp 2B50UR Miniature Circuit Breaker
Retail: $43.70
Price: $27.45

The Altech Corp 2B50UR is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 50
  • Poles: 2
  • Trip Curve: B
  • UL 1077 Listed, UL
MFG Part# 2B50UR
Altech Corp 2C50DL Miniature Circuit Breaker
Retail: $87.46
Price: $54.94

The Altech Corp 2C50DL is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 50
  • Poles: 2
  • Trip Curve: C
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 2C50DL
Altech Corp 2C50UM Miniature Circuit Breaker
Retail: $62.46
Price: $39.24

The Altech Corp 2C50UM is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 50
  • Poles: 2
  • Trip Curve: C
  • UL 508 Listed, UL, cUL, CSA
MFG Part# 2C50UM
Altech Corp 2C50UR Miniature Circuit Breaker
Retail: $43.70
Price: $27.45

The Altech Corp 2C50UR is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 50
  • Poles: 2
  • Trip Curve: C
  • UL 1077 Listed, UL
MFG Part# 2C50UR
Altech Corp 2D50DL Miniature Circuit Breaker
Retail: $87.46
Price: $54.94

The Altech Corp 2D50DL is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 50
  • Poles: 2
  • Trip Curve: D
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 2D50DL
Altech Corp 2D50UL Miniature Circuit Breaker
Retail: $82.45
Price: $51.79

The Altech Corp 2D50UL is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 50
  • Poles: 2
  • Trip Curve: D
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 2D50UL