Industrial Automation – Mouser Puerto Rico

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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Circuit Breaker Accessories Busbar Supp w/ fixing screw NES/5S Altech 1: $3.80 9In Stock	Mfr. Part # NES/5S Mouser Part # 845-NES5S	Altech	Circuit Breaker Accessories Busbar Supp w/ fixing screw Learn More about Altech busbar system		9In Stock	$3.80 $3.54 $3.34 $3.24 View $3.11 $2.70	Min.: 1 Mult.: 1
Circuit Breaker Accessories Busbar,2Phase+1/2pole,18Sqmm, 2P18U3H/14 Altech 1: $50.96 1In Stock	Mfr. Part # 2P18U3H/14 Mouser Part # 845-2P18U3H14	Altech	Circuit Breaker Accessories Busbar,2Phase+1/2pole,18Sqmm, Learn More about Altech busbar system	Datasheet	1In Stock	$50.96 $36.27 $36.13 $33.74 View $32.79 $31.77 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 2 Ph Busbar 66.3mm 4P 2x2 pole, 80A 2P18U3/4 Altech 1: $32.12 2In Stock	Mfr. Part # 2P18U3/4 Mouser Part # 845-2P18U3/4	Altech	Circuit Breaker Accessories 2 Ph Busbar 66.3mm 4P 2x2 pole, 80A Learn More about Altech busbar system	Datasheet	2In Stock	$32.12 $23.98 $21.98 $19.99 View $19.30 $18.72 $18.28 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 2 Ph Busbar 204.6mm 12Pin, 115A 2P16UL3/12 Altech 1: $41.15 85In Stock	Mfr. Part # 2P16UL3/12 Mouser Part # 845-2P16UL3/12	Altech	Circuit Breaker Accessories 2 Ph Busbar 204.6mm 12Pin, 115A Learn More about Altech busbar system	Datasheet	85In Stock	$41.15 $34.13 $31.48 $26.72 View $26.19 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 2 Ph Busbar 310.2mm 18Pin, 115A 2P16UL3/18 Altech 1: $40.20 53In Stock 63On Order	Mfr. Part # 2P16UL3/18 Mouser Part # 845-2P16UL3/18	Altech	Circuit Breaker Accessories 2 Ph Busbar 310.2mm 18Pin, 115A Learn More about Altech busbar system	Datasheet	53In Stock 63On Order On Order Ship Dates Mfr. #: 2P16UL3/18 Stock: 53 Can Ship Immediately On Order: 50 Expected 9/30/2026 13 Expected 10/26/2026 Factory Lead-Time: 14 Weeks	$40.20 $40.07 View Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 2 Ph Busbar 99mm 6Pin, 115A 2P16UL3/6 Altech 1: $22.83 148In Stock	Mfr. Part # 2P16UL3/6 Mouser Part # 845-2P16UL3/6	Altech	Circuit Breaker Accessories 2 Ph Busbar 99mm 6Pin, 115A Learn More about Altech busbar system	Datasheet	148In Stock	$22.83 $19.28 $18.96 $18.51 View $16.40 $14.90 $14.40 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 3 Ph Busbar 310.2mm 18Pin, 115A 3P16UL3/18 Altech 1: $62.14 107In Stock 62Expected 1/11/2027	Mfr. Part # 3P16UL3/18 Mouser Part # 845-3P16UL3/18	Altech	Circuit Breaker Accessories 3 Ph Busbar 310.2mm 18Pin, 115A Learn More about Altech busbar system	Datasheet	107In Stock 62Expected 1/11/2027	$62.14 $59.38 $55.22 $46.92 View $45.85 $43.48 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories Power Feed Lug for 1P/2P/3PUL P35ULT Altech 1: $13.65 1,164In Stock	Mfr. Part # P35ULT Mouser Part # 845-P35ULT	Altech	Circuit Breaker Accessories Power Feed Lug for 1P/2P/3PUL Learn More about Altech busbar system	Datasheet	1,164In Stock	$13.65 $12.83 $12.42 $11.83	Min.: 1 Mult.: 1
Circuit Breaker Accessories End Cap for 1P/2P/3PU series 18/25CAP3P Altech 1: $0.62 281In Stock	Mfr. Part # 18/25CAP3P Mouser Part # 845-18/25CAP3P	Altech	Circuit Breaker Accessories End Cap for 1P/2P/3PU series Learn More about Altech busbar system	Datasheet	281In Stock	$0.62 $0.52 $0.519	Min.: 1 Mult.: 1
Circuit Breaker Accessories 1 Ph Busbar 204.6mm 12Pin, 115A 1P16UL3/12 Altech 1: $27.80 13In Stock	Mfr. Part # 1P16UL3/12 Mouser Part # 845-1P16UL3/12	Altech	Circuit Breaker Accessories 1 Ph Busbar 204.6mm 12Pin, 115A Learn More about Altech busbar system	Datasheet	13In Stock	$27.80 $26.81 $24.74 $19.12 View $18.69 $18.09 $17.65 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 1 Ph Busbar 310.2mm 18Pin, 115A 1P16UL3/18 Altech 1: $44.69 1In Stock	Mfr. Part # 1P16UL3/18 Mouser Part # 845-1P16UL3/18	Altech	Circuit Breaker Accessories 1 Ph Busbar 310.2mm 18Pin, 115A Learn More about Altech busbar system	Datasheet	1In Stock	$44.69 $33.59 $31.33 $28.96 View $28.00 $27.14 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 1 Ph Busbar 99mm 6Pin, 115A 1P16UL3/6 Altech 1: $17.01 50In Stock 56Expected 10/9/2026	Mfr. Part # 1P16UL3/6 Mouser Part # 845-1P16UL3/6	Altech	Circuit Breaker Accessories 1 Ph Busbar 99mm 6Pin, 115A Learn More about Altech busbar system	Datasheet	50In Stock 56Expected 10/9/2026	$17.01 $15.82 $15.10 $14.49 View $12.31 $12.00 $11.65 $11.54 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 3Pin3x1Pole50.3mm 1 PhaseBusbar 1P18U1/3 Altech 1: $10.39 12In Stock	Mfr. Part # 1P18U1/3 Mouser Part # 845-1P18U1/3	Altech	Circuit Breaker Accessories 3Pin3x1Pole50.3mm 1 PhaseBusbar Learn More about Altech busbar system	Datasheet	12In Stock	$10.39 $9.75 $9.36 $7.52 View $7.45 $7.14 $6.83 $6.74 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 1 Ph Busbar 68.0mm 4Pin 4x1 pole, 80A 1P18U1/4 Altech 1: $8.19 43In Stock	Mfr. Part # 1P18U1/4 Mouser Part # 845-1P18U1/4	Altech	Circuit Breaker Accessories 1 Ph Busbar 68.0mm 4Pin 4x1 pole, 80A Learn More about Altech busbar system	Datasheet	43In Stock	$8.19 $8.12 $7.72 $7.64 Quote Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 1 PH BUSBAR 18sqmm 57 LUGS 1P18U1/57 Altech 1: $58.60 6In Stock	Mfr. Part # 1P18U1/57 Mouser Part # 845-1P18U1/57	Altech	Circuit Breaker Accessories 1 PH BUSBAR 18sqmm 57 LUGS Learn More about Altech busbar system	Datasheet	6In Stock	$58.60 $51.36 $43.28 $40.11 View $38.91 $37.87 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 1 Ph Busbar 139.0mm 8Pin 8x1 pole, 80A 1P18U1/8 Altech 1: $15.20 1In Stock	Mfr. Part # 1P18U1/8 Mouser Part # 845-1P18U1/8	Altech	Circuit Breaker Accessories 1 Ph Busbar 139.0mm 8Pin 8x1 pole, 80A Learn More about Altech busbar system	Datasheet	1In Stock	$15.20 $10.80 $10.54 $10.17 View $9.81 $9.68	Min.: 1 Mult.: 1
Circuit Breaker Accessories Busbar,1 Phase,18sqmm,PIN Type 1P18U1/9 Altech 1: $11.47 1In Stock	Mfr. Part # 1P18U1/9 Mouser Part # 845-1P18U19	Altech	Circuit Breaker Accessories Busbar,1 Phase,18sqmm,PIN Type Learn More about Altech busbar system	Datasheet	1In Stock	$11.47 $11.06 $10.66 $10.27 $10.13	Min.: 1 Mult.: 1
Circuit Breaker Accessories 2 Ph Busbar 137.3mm 8Pin, 4x2 pole, 80A 2P18U3/8 Altech 1: $32.51 42In Stock	Mfr. Part # 2P18U3/8 Mouser Part # 845-2P18U3/8	Altech	Circuit Breaker Accessories 2 Ph Busbar 137.3mm 8Pin, 4x2 pole, 80A Learn More about Altech busbar system	Datasheet	42In Stock	$32.51 $31.43 $28.02 $23.38 View $22.83 $22.17 $21.71 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories Busbar,2 Phase,18sqmm,PIN Type 2P18U3/10 Altech 1: $38.04 21In Stock	Mfr. Part # 2P18U3/10 Mouser Part # 845-2P18U310	Altech	Circuit Breaker Accessories Busbar,2 Phase,18sqmm,PIN Type Learn More about Altech busbar system	Datasheet	21In Stock	$38.04 $34.63 $31.95 $26.51 View $25.66 $24.89 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories Busbar 3Phase 18sqmm PIN Type 57 lugs 3P18U3/57 Altech 1: $140.01 1In Stock	Mfr. Part # 3P18U3/57 Mouser Part # 845-3P18U3/57	Altech	Circuit Breaker Accessories Busbar 3Phase 18sqmm PIN Type 57 lugs Learn More about Altech busbar system		1In Stock	$140.01 $109.50 $103.14 $96.35 View $93.99 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 3 Ph Busbar 101.8mm 6Pin, 2x3pole, 80A 3P18U3/6 Altech 1: $42.48 2In Stock	Mfr. Part # 3P18U3/6 Mouser Part # 845-3P18U3/6	Altech	Circuit Breaker Accessories 3 Ph Busbar 101.8mm 6Pin, 2x3pole, 80A Learn More about Altech busbar system		2In Stock	$42.48 $32.49 $30.69 $27.87 View $27.08 $26.30 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories Busbar,3 Ph, 57 PINS 19X3 POLE 3P25U3/57 Altech 1: $164.76 8In Stock	Mfr. Part # 3P25U3/57 Mouser Part # 845-3P25U3/57	Altech	Circuit Breaker Accessories Busbar,3 Ph, 57 PINS 19X3 POLE Learn More about Altech busbar system	Datasheet	8In Stock	$164.76 $136.62 $112.21 $104.34 View $101.25 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories Busbar,3 Phase,25sqmm,PIN Type 3P25U3/12 Altech 1: $45.90 5In Stock	Mfr. Part # 3P25U3/12 Mouser Part # 845-3P25U312	Altech	Circuit Breaker Accessories Busbar,3 Phase,25sqmm,PIN Type Learn More about Altech busbar system	Datasheet	5In Stock	$45.90 $43.71 $42.38 $41.20 Quote Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories Busbar,3 Phase,25sqmm,PIN Type 3P25U3/15 Altech 1: $71.38 6In Stock	Mfr. Part # 3P25U3/15 Mouser Part # 845-3P25U315	Altech	Circuit Breaker Accessories Busbar,3 Phase,25sqmm,PIN Type Learn More about Altech busbar system		6In Stock	$71.38 $59.22 $55.21 $49.55 View $48.41 $47.08 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories Busbar,3 Phase,25sqmm,PIN Type 3P25U3/6 Altech 1: $38.61 38In Stock	Mfr. Part # 3P25U3/6 Mouser Part # 845-3P25U36	Altech	Circuit Breaker Accessories Busbar,3 Phase,25sqmm,PIN Type Learn More about Altech busbar system		38In Stock	$38.61 $36.87 $35.89 $34.84 View Quote	Min.: 1 Mult.: 1

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