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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

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Altech Corp 1C40UM Miniature Circuit Breaker
Retail: $31.24
Price: $19.62

The Altech Corp 1C40UM 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: 40
  • Poles: 1
  • Trip Curve: C
  • UL 508 Listed, UL, cUL, CSA
MFG Part# 1C40UM
Altech Corp 1D40UM Miniature Circuit Breaker
Retail: $31.24
Price: $19.62

The Altech Corp 1D40UM 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: 40
  • Poles: 1
  • Trip Curve: D
  • UL 508 Listed, UL, cUL, CSA
MFG Part# 1D40UM
Noark B1N2B40 Mini Circuit Breaker
Retail: $44.83
Price: $41.02

The Noark B1N2B40 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 40
  • Poles: 2
  • Trip Curve: B
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N2B40
Noark B1N2C40 Mini Circuit Breaker
Retail: $43.38
Price: $39.70

The Noark B1N2C40 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 40
  • Poles: 2
  • Trip Curve: C
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N2C40
Noark B1N2D40 Mini Circuit Breaker
Retail: $43.38
Price: $39.70

The Noark B1N2D40 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 40
  • Poles: 2
  • Trip Curve: D
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N2D40
Altech Corp 2B40UM Miniature Circuit Breaker
Retail: $62.46
Price: $39.24

The Altech Corp 2B40UM 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: 40
  • Poles: 2
  • Trip Curve: B
  • UL 508 Listed, UL, cUL, CSA
MFG Part# 2B40UM
Altech Corp 2B40UR Miniature Circuit Breaker
Retail: $43.70
Price: $27.45

The Altech Corp 2B40UR 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: 40
  • Poles: 2
  • Trip Curve: B
  • UL 1077 Listed, UL
MFG Part# 2B40UR
Altech Corp 2C40DL Miniature Circuit Breaker
Retail: $87.46
Price: $54.94

The Altech Corp 2C40DL 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: 40
  • Poles: 2
  • Trip Curve: C
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 2C40DL
Altech Corp 2C40UL Miniature Circuit Breaker
Retail: $82.45
Price: $51.79

The Altech Corp 2C40UL 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: 40
  • Poles: 2
  • Trip Curve: C
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 2C40UL
Altech Corp 2C40UM Miniature Circuit Breaker
Retail: $62.46
Price: $39.24

The Altech Corp 2C40UM 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: 40
  • Poles: 2
  • Trip Curve: C
  • UL 508 Listed, UL, cUL, CSA
MFG Part# 2C40UM
Altech Corp 2C40UR Miniature Circuit Breaker
Retail: $43.70
Price: $27.45

The Altech Corp 2C40UR 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: 40
  • Poles: 2
  • Trip Curve: C
  • UL 1077 Listed, UL
MFG Part# 2C40UR
Altech Corp 2D40DL Miniature Circuit Breaker
Retail: $87.46
Price: $54.94

The Altech Corp 2D40DL 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: 40
  • Poles: 2
  • Trip Curve: D
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 2D40DL