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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 DC1DU12L Miniature Circuit Breaker
Retail: $32.33
Price: $20.31

The Altech DC1DU12L is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 12
  • Pole: 1
  • Trip Curve: D
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# DC1DU12L
Altech 1DU12L Miniature Circuit Breaker
Retail: $30.04
Price: $18.87

The Altech 1DU12L is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 12
  • Pole: 1
  • Trip Curve: D
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# 1DU12L
Altech 1DU12R Miniature Circuit Breaker
Retail: $16.17
Price: $10.16

The Altech 1DU12R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.

  • Terminal Type: Box Lugs
  • Amperage: 12
  • Pole: 1
  • Trip Curve: D
  • UL 1077 Listed, IEC/EN60898/60947-2
MFG Part# 1DU12R
Altech 2BU12R Miniature Circuit Breaker
Retail: $32.33
Price: $20.31

The Altech 2BU12R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.

  • Terminal Type: Box Lugs
  • Amperage: 12
  • Poles: 2
  • Trip Curve: B
  • UL 1077 Listed, IEC/EN60898/60947-2
MFG Part# 2BU12R
Altech DC2CU12L Miniature Circuit Breaker
Retail: $64.69
Price: $40.64

The Altech DC2CU12L is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 12
  • Poles: 2
  • Trip Curve: C
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# DC2CU12L
Altech 2C12UR Miniature Circuit Breaker
Retail: $34.66
Price: $21.77

The Altech 2C12UR is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.

  • Terminal Type: Box Clamp and Ring Tongue
  • Amperage: 12
  • Poles: 2
  • Trip Curve: C
  • UL 1077 Listed, IEC/EN60898/60947-2
MFG Part# 2C12UR
Altech 2CU12L Miniature Circuit Breaker
Retail: $60.06
Price: $37.73

The Altech 2CU12L is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 12
  • Poles: 2
  • Trip Curve: C
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# 2CU12L
Altech 2CU12R Miniature Circuit Breaker
Retail: $32.33
Price: $20.31

The Altech 2CU12R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.

  • Terminal Type: Box Lugs
  • Amperage: 12
  • Poles: 2
  • Trip Curve: C
  • UL 1077 Listed, IEC/EN60898/60947-2
MFG Part# 2CU12R
Altech 2D12UL Miniature Circuit Breaker
Retail: $65.10
Price: $40.89

The Altech 2D12UL is suitable for branch circuit device protection.

  • Terminal Type: Dual Connection (Box Lugs or Ring Tongue)
  • Amperage: 12
  • Poles: 2
  • Trip Curve: D
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# 2D12UL
Altech 2DU12L Miniature Circuit Breaker
Retail: $60.06
Price: $37.73

The Altech 2DU12L is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 12
  • Poles: 2
  • Trip Curve: D
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# 2DU12L
Altech 2DU12R Miniature Circuit Breaker
Retail: $32.33
Price: $20.31

The Altech 2DU12R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.

  • Terminal Type: Box Lugs
  • Amperage: 12
  • Poles: 2
  • Trip Curve: D
  • UL 1077 Listed, IEC/EN60898/60947-2
MFG Part# 2DU12R
Altech 3BU12R Miniature Circuit Breaker
Retail: $48.51
Price: $30.48

The Altech 3BU12R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.

  • Terminal Type: Box Lugs
  • Amperage: 12
  • Poles: 3
  • Trip Curve: B
  • UL 1077 Listed, IEC/EN60898/60947-2
MFG Part# 3BU12R