Circuit Breaker Accessories

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Busbar Systems

Altech Busbar Systems are an innovative way to jumper up to 57 poles of miniature circuit breakers (MCB), manual motor controllers (MMC), and supplementary protectors (SP). Altech Busbars provide a 30% reduction in installation time, reduced maintenance, high electrical ratings, and save panel space. The Altech Universal UL489 Busbar fits most UL489 miniature circuit breakers on the market. The Altech Universal UL1077/508 Busbar fits most supplementary protectors and manual motor controllers in the market.

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Part #

Circuit Breaker Accessories Modular Dir Pwr Feed for 1P/2P/3PUL

P50ULB
Altech
1: $22.04
39In Stock
52Expected 2026-02-25

Mfr. Part #
P50ULB

Mouser Part #
845-P50ULB

Altech

Circuit Breaker Accessories Modular Dir Pwr Feed for 1P/2P/3PUL

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Datasheet

39In Stock

52Expected 2026-02-25

$22.04

$21.96

$21.73

$21.34

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Min.: 1
Mult.: 1

489

End Feed Device

Circuit Breaker Accessories APDBUSBAR 25A/600VAC;1PH;83TB

1LB83-25A
Altech
1: $158.55
3In Stock

Mfr. Part #
1LB83-25A

Mouser Part #
845-1LB8325A

Altech

Circuit Breaker Accessories APDBUSBAR 25A/600VAC;1PH;83TB

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Datasheet

3In Stock

$158.55

$132.63

$125.66

$104.72

$97.73

Min.: 1
Mult.: 1

Circuit Breaker Accessories Busbar 3Phase 18sqmm PIN Type 57 lugs

3P18U3/57
Altech
1: $217.02
1In Stock

Mfr. Part #
3P18U3/57

Mouser Part #
845-3P18U3/57

Altech

Circuit Breaker Accessories Busbar 3Phase 18sqmm PIN Type 57 lugs

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1In Stock

$217.02

$179.96

$167.68

$138.09

$128.23

Min.: 1
Mult.: 1

Busbar

Circuit Breaker Accessories Insulation Cap for 1P/2P/3PU series

BRS5
Altech
1: $6.80
9In Stock

Mfr. Part #
BRS5

Mouser Part #
845-BRS5

Altech

Circuit Breaker Accessories Insulation Cap for 1P/2P/3PU series

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Datasheet

9In Stock

$6.80

$5.67

$5.43

$5.27

Min.: 1
Mult.: 1

508

Cap

Insulation Cap

Circuit Breaker Accessories Busbar Supp w/ fixing screw

NES/5S
Altech
1: $5.89
37In Stock

Mfr. Part #
NES/5S

Mouser Part #
845-NES5S

Altech

Circuit Breaker Accessories Busbar Supp w/ fixing screw

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37In Stock

$5.89

$5.49

$5.18

$5.02

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Min.: 1
Mult.: 1

Circuit Breaker Accessories Busbar,3 Phase,25sqmm,PIN Type

3P25U3/15
Altech
1: $76.80
6Expected 2026-02-18

Mfr. Part #
3P25U3/15

Mouser Part #
845-3P25U315

Altech

Circuit Breaker Accessories Busbar,3 Phase,25sqmm,PIN Type

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6Expected 2026-02-18

$76.80

$74.83

$73.50

$72.03

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Min.: 1
Mult.: 1

Busbar

3 Phase Busbar

Circuit Breaker Accessories Endcap for 18/25sqmm Busbar,

18/25CAP1P
Altech
1: $3.22
1,199Factory Stock Available

Mfr. Part #
18/25CAP1P

Mouser Part #
845-1825CAP1P

Altech

Circuit Breaker Accessories Endcap for 18/25sqmm Busbar,

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1,199Factory Stock Available

More Info Available

$3.22

$3.13

$3.04

$2.56

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Min.: 1
Mult.: 1

End Cap

Busbar Terminal Cover

Circuit Breaker Accessories 1 Ph Busbar 310.2mm 18Pin, 115A

1P16UL3/18
Altech
1: $46.42
283Factory Stock Available

Mfr. Part #
1P16UL3/18

Mouser Part #
845-1P16UL3/18

Altech

Circuit Breaker Accessories 1 Ph Busbar 310.2mm 18Pin, 115A

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Datasheet

283Factory Stock Available

More Info Available

$46.42

$45.59

$44.38

$43.35

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Min.: 1
Mult.: 1

489

Busbar

1 Phase Busbar

Circuit Breaker Accessories 1 Ph Busbar 85.8mm 5Pin 5x1 pole, 80A

1P18U1/5
Altech
1: $13.69
46Factory Stock Available

Mfr. Part #
1P18U1/5

Mouser Part #
845-1P18U1/5

Altech

Circuit Breaker Accessories 1 Ph Busbar 85.8mm 5Pin 5x1 pole, 80A

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Datasheet

46Factory Stock Available

More Info Available

$13.69

$13.67

$12.87

$12.15

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Min.: 1
Mult.: 1

508

Busbar

1 Phase Busbar

Circuit Breaker Accessories Busbar,2 Ph, 56 PINS 28X2 POLE

2P25U3/56
Altech
1: $141.70
242Factory Stock Available

Mfr. Part #
2P25U3/56

Mouser Part #
845-2P25U3/56

Altech

Circuit Breaker Accessories Busbar,2 Ph, 56 PINS 28X2 POLE

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Datasheet

242Factory Stock Available

More Info Available

$141.70

$133.55

$126.57

$119.27

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Min.: 1
Mult.: 1

508

Busbar

2 Phase Busbar

Circuit Breaker Accessories 3 Ph Busbar 155.0mm 9Pin, 3x3pole, 80A

3P18U3/9
Altech
1: $50.50
8Factory Stock Available

Mfr. Part #
3P18U3/9

Mouser Part #
845-3P18U3/9

Altech

Circuit Breaker Accessories 3 Ph Busbar 155.0mm 9Pin, 3x3pole, 80A

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Datasheet

8Factory Stock Available

More Info Available

$50.50

$47.31

$45.65

$44.18

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Min.: 1
Mult.: 1

508

Busbar

3 Phase Busbar

Circuit Breaker Accessories Busbar,3 Phase,18sqmm,PIN Type

3P18U3/21
Altech
1: $78.54
49Factory Stock Available

Mfr. Part #
3P18U3/21

Mouser Part #
845-3P18U321

Altech

Circuit Breaker Accessories Busbar,3 Phase,18sqmm,PIN Type

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Datasheet

49Factory Stock Available

More Info Available

$78.54

$75.87

$72.17

$67.74

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Min.: 1
Mult.: 1

Busbar

3 Phase Busbar

Circuit Breaker Accessories Busbar,3phase,25sqmm,PIN Type

3P25U3/21
Altech
1: $90.16
6Factory Stock Available

Mfr. Part #
3P25U3/21

Mouser Part #
845-3P25U321

Altech

Circuit Breaker Accessories Busbar,3phase,25sqmm,PIN Type

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Datasheet

6Factory Stock Available

More Info Available

$90.16

$88.52

$81.50

$78.90

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Min.: 1
Mult.: 1

Busbar

3 Phase Busbar

Circuit Breaker Accessories Modular Dir Pwr Feed for 1P/2P/3PU serie

P95UB
Altech
1: $118.34
2Factory Stock Available

Mfr. Part #
P95UB

Mouser Part #
845-P95UB

Altech

Circuit Breaker Accessories Modular Dir Pwr Feed for 1P/2P/3PU serie

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Datasheet

2Factory Stock Available

More Info Available

$118.34

$116.06

$107.34

$104.13

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Min.: 1
Mult.: 1

508

Center/Middle Feeding Device

Circuit Breaker Accessories Insulation for18/25sqmm Busbar

18/25INS3P
Altech
1: $43.60
78Factory Stock Available

Mfr. Part #
18/25INS3P

Mouser Part #
845-1825INS3P

Altech

Circuit Breaker Accessories Insulation for18/25sqmm Busbar

Learn More

Datasheet

78Factory Stock Available

More Info Available

$43.60

$40.95

$39.51

$38.25

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Min.: 1
Mult.: 1

Busbar

3 Phase Busbar

Circuit Breaker Accessories Insulation for18sqmm Busbar

18INS1P
Altech
1: $22.30
5Factory Stock Available

Mfr. Part #
18INS1P

Mouser Part #
845-18INS1P

Altech

Circuit Breaker Accessories Insulation for18sqmm Busbar

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5Factory Stock Available

More Info Available

$22.30

$20.94

$20.21

$19.31

Quote

Min.: 1
Mult.: 1

Busbar

1 Phase Busbar

Circuit Breaker Accessories 1 Ph Busbar 174.5mm 10Pin 10x1 pole, 80A

1P18U1/10
Altech
1: $18.79
59Factory Stock Available

Mfr. Part #
1P18U1/10

Mouser Part #
845-1P18U1/10

Altech

Circuit Breaker Accessories 1 Ph Busbar 174.5mm 10Pin 10x1 pole, 80A

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Datasheet

59Factory Stock Available

More Info Available

$18.79

$18.77

$18.10

$17.78

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Min.: 1
Mult.: 1

508

Busbar

1 Phase Busbar

Circuit Breaker Accessories 1 Ph Busbar 423.0mm 24Pin 24x1 pole, 80A

1P18U1/24
Altech
1: $33.06
52Factory Stock Available

Mfr. Part #
1P18U1/24

Mouser Part #
845-1P18U1/24

Altech

Circuit Breaker Accessories 1 Ph Busbar 423.0mm 24Pin 24x1 pole, 80A

Learn More

Datasheet

52Factory Stock Available

More Info Available

$33.06

$31.31

$29.37

$28.26

View

Min.: 1
Mult.: 1

508

Busbar

1 Phase Busbar

Circuit Breaker Accessories 1 Ph Busbar 103.5mm 6Pin 6x1 pole, 80A

1P18U1/6
Altech
1: $14.68
51Factory Stock Available

Mfr. Part #
1P18U1/6

Mouser Part #
845-1P18U1/6

Altech

Circuit Breaker Accessories 1 Ph Busbar 103.5mm 6Pin 6x1 pole, 80A

Learn More

Datasheet

51Factory Stock Available

More Info Available

$14.68

$14.15

$13.38

$12.88

View

Min.: 1
Mult.: 1

508

Busbar

1 Phase Busbar

Circuit Breaker Accessories 1 Ph Busbar 139.0mm 8Pin 8x1 pole, 80A

1P18U1/8
Altech
1: $16.74
111Factory Stock Available

Mfr. Part #
1P18U1/8

Mouser Part #
845-1P18U1/8

Altech

Circuit Breaker Accessories 1 Ph Busbar 139.0mm 8Pin 8x1 pole, 80A

Learn More

Datasheet

111Factory Stock Available

More Info Available

$16.74

$15.75

$14.80

$14.31

View

Min.: 1
Mult.: 1

508

Busbar

1 Phase Busbar

Circuit Breaker Accessories Busbar,1 Phase,18sqmm,PIN Type

1P18U1/7
Altech
1: $15.76
107Factory Stock Available

Mfr. Part #
1P18U1/7

Mouser Part #
845-1P18U17

Altech

Circuit Breaker Accessories Busbar,1 Phase,18sqmm,PIN Type

Learn More

Datasheet

107Factory Stock Available

More Info Available

$15.76

$15.52

$14.91

$14.45

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Min.: 1
Mult.: 1

Busbar

1 Phase Busbar

Circuit Breaker Accessories Busbar,1 Phase,18sqmm,PIN Type

1P18U1/9
Altech
1: $17.78
14Factory Stock Available

Mfr. Part #
1P18U1/9

Mouser Part #
845-1P18U19

Altech

Circuit Breaker Accessories Busbar,1 Phase,18sqmm,PIN Type

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Datasheet

14Factory Stock Available

More Info Available

$17.78

$16.66

$15.98

$15.31

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Min.: 1
Mult.: 1

Busbar

1 Phase Busbar

Circuit Breaker Accessories APDBUSBAR 63A/600VAC;1PH;158TB

1TC158-63A
Altech
1: $315.33
7Factory Stock Available

Mfr. Part #
1TC158-63A

Mouser Part #
845-1TC15863A

Altech

Circuit Breaker Accessories APDBUSBAR 63A/600VAC;1PH;158TB

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7Factory Stock Available

More Info Available

$315.33

$261.47

$243.66

$200.66

Quote

Min.: 1
Mult.: 1

Circuit Breaker Accessories APDBUSBAR 63A/600VAC;1PH;83TB

1TC83-63A
Altech
1: $188.59
14Factory Stock Available

Mfr. Part #
1TC83-63A

Mouser Part #
845-1TC8363A

Altech

Circuit Breaker Accessories APDBUSBAR 63A/600VAC;1PH;83TB

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Datasheet

14Factory Stock Available

More Info Available

$188.59

$156.38

$144.20

$119.26

$110.10

Min.: 1
Mult.: 1

Circuit Breaker Accessories APDBUSBAR 25A/600VAC;2PH;158TB

2LB158-25A
Altech
1: $342.98
8Factory Stock Available

Mfr. Part #
2LB158-25A

Mouser Part #
845-2LB15825A

Altech

Circuit Breaker Accessories APDBUSBAR 25A/600VAC;2PH;158TB

Learn More

8Factory Stock Available

More Info Available

$342.98

$284.41

$265.02

$218.26

Quote

Min.: 1
Mult.: 1

Busbar Systems

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