• LS Electric USPB Series UL Type 1 Panel SPD (50/100 kA)
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LS Electric USPB Series UL Type 1 Panel SPD (50/100 kA)

LS Electric USPB Series UL Type 1 Panel SPD (50/100 kA)

LS Electric USPB series UL Listed Type 1 panel surge protective devices with 50 kA or 100 kA surge capacity, LED status and remote alarm contact.

Key features

  • ANSI/UL1449 5th edition and CSA C22.2 Type 1 SPD
  • Surge capacity 50 kA (In 10 kA) or 100 kA (In 20 kA); SCCR 200 kA
  • Single phase, split phase, WYE, DELTA and high-leg DELTA systems 120 to 600 V
  • Remote alarm auxiliary contact (C/NC/NO) built in
  • Green/red LED status; 1/2 inch NPT threaded nipple, waterproof enclosure 162 x 80 x 76 mm

Specifications

Standards ANSI/UL1449 5th Type 1, CSA C22.2
Connection Parallel connected, 1 port
Frequency 47-63 Hz
SCCR 200 kA
UL SPD category Type 1 (T1)
Additional function AL remote alarm aux
Dimensions W x D x H 162 x 80 x 76 mm
Mounting 1/2 in NPT
Operating temperature -40 to 75 C
Source LS Electric Surge Protective Device catalog C01551-07 (2025-10), p. 41, 45-50
USPB-120SP50-T1-AL Rated voltage Un: 120/240 V | System: Split phase 3W+G | MCOV: 150 V | Surge capacity: 50 kA
USPB-240SP50-T1-AL Rated voltage Un: 240/480 V | System: Split phase 3W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-120SPC50-T1-AL Rated voltage Un: 120/240 V | System: Split phase, N-G mode deleted | MCOV: 150 V | Surge capacity: 50 kA
USPB-240SPC50-T1-AL Rated voltage Un: 240/480 V | System: Split phase, N-G mode deleted | MCOV: 320 V | Surge capacity: 50 kA
USPB-120S50-T1-AL Rated voltage Un: 120 V | System: Single phase 2W+G | MCOV: 150 V | Surge capacity: 50 kA
USPB-127S50-T1-AL Rated voltage Un: 127 V | System: Single phase 2W+G | MCOV: 150 V | Surge capacity: 50 kA
USPB-240S50-T1-AL Rated voltage Un: 220-240 V | System: Single phase 2W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-277S50-T1-AL Rated voltage Un: 277 V | System: Single phase 2W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-347S50-T1-AL Rated voltage Un: 347 V | System: Single phase 2W+G | MCOV: 420 V | Surge capacity: 50 kA
USPB-120Y50-T1-AL Rated voltage Un: 120/208 V | System: Three phase WYE 4W+G | MCOV: 150 V | Surge capacity: 50 kA
USPB-127Y50-T1-AL Rated voltage Un: 127/220 V | System: Three phase WYE 4W+G | MCOV: 150 V | Surge capacity: 50 kA
USPB-240Y50-T1-AL Rated voltage Un: 240/415 V | System: Three phase WYE 4W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-277Y50-T1-AL Rated voltage Un: 277/480 V | System: Three phase WYE 4W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-347Y50-T1-AL Rated voltage Un: 347/600 V | System: Three phase WYE 4W+G | MCOV: 420 V | Surge capacity: 50 kA
USPB-120YC50-T1-AL Rated voltage Un: 120/208 V | System: WYE, N-G mode deleted | MCOV: 150 V | Surge capacity: 50 kA
USPB-127YC50-T1-AL Rated voltage Un: 127/220 V | System: WYE, N-G mode deleted | MCOV: 150 V | Surge capacity: 50 kA
USPB-240YC50-T1-AL Rated voltage Un: 240/415 V | System: WYE, N-G mode deleted | MCOV: 320 V | Surge capacity: 50 kA
USPB-277YC50-T1-AL Rated voltage Un: 277/480 V | System: WYE, N-G mode deleted | MCOV: 320 V | Surge capacity: 50 kA
USPB-347YC50-T1-AL Rated voltage Un: 347/600 V | System: WYE, N-G mode deleted | MCOV: 420 V | Surge capacity: 50 kA
USPB-240D50-T1-AL Rated voltage Un: 240 V | System: Three phase DELTA 3W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-480D50-T1-AL Rated voltage Un: 480 V | System: Three phase DELTA 3W+G | MCOV: 550 V | Surge capacity: 50 kA
USPB-600D50-T1-AL Rated voltage Un: 600 V | System: Three phase DELTA 3W+G | MCOV: 690 V | Surge capacity: 50 kA
USPB-120H50-T1-AL Rated voltage Un: 120/240 V | System: High-leg DELTA 4W+G | MCOV: 150/320 V (H) | Surge capacity: 50 kA
USPB-240H50-T1-AL Rated voltage Un: 240/480 V | System: High-leg DELTA 4W+G | MCOV: 320/550 V (H) | Surge capacity: 50 kA
USPB-120HC50-T1-AL Rated voltage Un: 120/240 V | System: High-leg DELTA, N-G mode deleted | MCOV: 150/320 V (H) | Surge capacity: 50 kA
USPB-240HC50-T1-AL Rated voltage Un: 240/480 V | System: High-leg DELTA, N-G mode deleted | MCOV: 320/550 V (H) | Surge capacity: 50 kA
USPB-120SP100-T1-AL Rated voltage Un: 120/240 V | System: Split phase 3W+G | MCOV: 150 V | Surge capacity: 100 kA
USPB-240SP100-T1-AL Rated voltage Un: 240/480 V | System: Split phase 3W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-120SPC100-T1-AL Rated voltage Un: 120/240 V | System: Split phase, N-G mode deleted | MCOV: 150 V | Surge capacity: 100 kA
USPB-240SPC100-T1-AL Rated voltage Un: 240/480 V | System: Split phase, N-G mode deleted | MCOV: 320 V | Surge capacity: 100 kA
USPB-120S100-T1-AL Rated voltage Un: 120 V | System: Single phase 2W+G | MCOV: 150 V | Surge capacity: 100 kA
USPB-127S100-T1-AL Rated voltage Un: 127 V | System: Single phase 2W+G | MCOV: 150 V | Surge capacity: 100 kA
USPB-240S100-T1-AL Rated voltage Un: 220-240 V | System: Single phase 2W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-277S100-T1-AL Rated voltage Un: 277 V | System: Single phase 2W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-347S100-T1-AL Rated voltage Un: 347 V | System: Single phase 2W+G | MCOV: 420 V | Surge capacity: 100 kA
USPB-120Y100-T1-AL Rated voltage Un: 120/208 V | System: Three phase WYE 4W+G | MCOV: 150 V | Surge capacity: 100 kA
USPB-127Y100-T1-AL Rated voltage Un: 127/220 V | System: Three phase WYE 4W+G | MCOV: 150 V | Surge capacity: 100 kA
USPB-240Y100-T1-AL Rated voltage Un: 240/415 V | System: Three phase WYE 4W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-277Y100-T1-AL Rated voltage Un: 277/480 V | System: Three phase WYE 4W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-347Y100-T1-AL Rated voltage Un: 347/600 V | System: Three phase WYE 4W+G | MCOV: 420 V | Surge capacity: 100 kA
USPB-120YC100-T1-AL Rated voltage Un: 120/208 V | System: WYE, N-G mode deleted | MCOV: 150 V | Surge capacity: 100 kA
USPB-127YC100-T1-AL Rated voltage Un: 127/220 V | System: WYE, N-G mode deleted | MCOV: 150 V | Surge capacity: 100 kA
USPB-240YC100-T1-AL Rated voltage Un: 240/415 V | System: WYE, N-G mode deleted | MCOV: 320 V | Surge capacity: 100 kA
USPB-277YC100-T1-AL Rated voltage Un: 277/480 V | System: WYE, N-G mode deleted | MCOV: 320 V | Surge capacity: 100 kA
USPB-347YC100-T1-AL Rated voltage Un: 347/600 V | System: WYE, N-G mode deleted | MCOV: 420 V | Surge capacity: 100 kA
USPB-240D100-T1-AL Rated voltage Un: 240 V | System: Three phase DELTA 3W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-480D100-T1-AL Rated voltage Un: 480 V | System: Three phase DELTA 3W+G | MCOV: 550 V | Surge capacity: 100 kA
USPB-120H100-T1-AL Rated voltage Un: 120/240 V | System: High-leg DELTA 4W+G | MCOV: 150/320 V (H) | Surge capacity: 100 kA
USPB-240H100-T1-AL Rated voltage Un: 240/480 V | System: High-leg DELTA 4W+G | MCOV: 320/550 V (H) | Surge capacity: 100 kA
USPB-120HC100-T1-AL Rated voltage Un: 120/240 V | System: High-leg DELTA, N-G mode deleted | MCOV: 150/320 V (H) | Surge capacity: 100 kA
USPB-240HC100-T1-AL Rated voltage Un: 240/480 V | System: High-leg DELTA, N-G mode deleted | MCOV: 320/550 V (H) | Surge capacity: 100 kA
Surge Protective DevicesLS Electric
51 product codes available in this family
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LS Electric USPB Series UL Type 1 Panel SPD (50/100 kA)

Brand LS Electric·Surge Protective Devices

Available part numbers (51)

USPB-120SP50-T1-AL, USPB-240SP50-T1-AL, USPB-120SPC50-T1-AL, USPB-240SPC50-T1-AL, USPB-120S50-T1-AL, USPB-127S50-T1-AL, USPB-240S50-T1-AL, USPB-277S50-T1-AL, USPB-347S50-T1-AL, USPB-120Y50-T1-AL + 41 more — see full table ↓

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Product codeSpec
USPB-120SP50-T1-ALRated voltage Un: 120/240 V | System: Split phase 3W+G | MCOV: 150 V | Surge capacity: 50 kA
USPB-240SP50-T1-ALRated voltage Un: 240/480 V | System: Split phase 3W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-120SPC50-T1-ALRated voltage Un: 120/240 V | System: Split phase, N-G mode deleted | MCOV: 150 V | Surge capacity: 50 kA
USPB-240SPC50-T1-ALRated voltage Un: 240/480 V | System: Split phase, N-G mode deleted | MCOV: 320 V | Surge capacity: 50 kA
USPB-120S50-T1-ALRated voltage Un: 120 V | System: Single phase 2W+G | MCOV: 150 V | Surge capacity: 50 kA
USPB-127S50-T1-ALRated voltage Un: 127 V | System: Single phase 2W+G | MCOV: 150 V | Surge capacity: 50 kA
USPB-240S50-T1-ALRated voltage Un: 220-240 V | System: Single phase 2W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-277S50-T1-ALRated voltage Un: 277 V | System: Single phase 2W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-347S50-T1-ALRated voltage Un: 347 V | System: Single phase 2W+G | MCOV: 420 V | Surge capacity: 50 kA
USPB-120Y50-T1-ALRated voltage Un: 120/208 V | System: Three phase WYE 4W+G | MCOV: 150 V | Surge capacity: 50 kA
USPB-127Y50-T1-ALRated voltage Un: 127/220 V | System: Three phase WYE 4W+G | MCOV: 150 V | Surge capacity: 50 kA
USPB-240Y50-T1-ALRated voltage Un: 240/415 V | System: Three phase WYE 4W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-277Y50-T1-ALRated voltage Un: 277/480 V | System: Three phase WYE 4W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-347Y50-T1-ALRated voltage Un: 347/600 V | System: Three phase WYE 4W+G | MCOV: 420 V | Surge capacity: 50 kA
USPB-120YC50-T1-ALRated voltage Un: 120/208 V | System: WYE, N-G mode deleted | MCOV: 150 V | Surge capacity: 50 kA
USPB-127YC50-T1-ALRated voltage Un: 127/220 V | System: WYE, N-G mode deleted | MCOV: 150 V | Surge capacity: 50 kA
USPB-240YC50-T1-ALRated voltage Un: 240/415 V | System: WYE, N-G mode deleted | MCOV: 320 V | Surge capacity: 50 kA
USPB-277YC50-T1-ALRated voltage Un: 277/480 V | System: WYE, N-G mode deleted | MCOV: 320 V | Surge capacity: 50 kA
USPB-347YC50-T1-ALRated voltage Un: 347/600 V | System: WYE, N-G mode deleted | MCOV: 420 V | Surge capacity: 50 kA
USPB-240D50-T1-ALRated voltage Un: 240 V | System: Three phase DELTA 3W+G | MCOV: 320 V | Surge capacity: 50 kA
USPB-480D50-T1-ALRated voltage Un: 480 V | System: Three phase DELTA 3W+G | MCOV: 550 V | Surge capacity: 50 kA
USPB-600D50-T1-ALRated voltage Un: 600 V | System: Three phase DELTA 3W+G | MCOV: 690 V | Surge capacity: 50 kA
USPB-120H50-T1-ALRated voltage Un: 120/240 V | System: High-leg DELTA 4W+G | MCOV: 150/320 V (H) | Surge capacity: 50 kA
USPB-240H50-T1-ALRated voltage Un: 240/480 V | System: High-leg DELTA 4W+G | MCOV: 320/550 V (H) | Surge capacity: 50 kA
USPB-120HC50-T1-ALRated voltage Un: 120/240 V | System: High-leg DELTA, N-G mode deleted | MCOV: 150/320 V (H) | Surge capacity: 50 kA
USPB-240HC50-T1-ALRated voltage Un: 240/480 V | System: High-leg DELTA, N-G mode deleted | MCOV: 320/550 V (H) | Surge capacity: 50 kA
USPB-120SP100-T1-ALRated voltage Un: 120/240 V | System: Split phase 3W+G | MCOV: 150 V | Surge capacity: 100 kA
USPB-240SP100-T1-ALRated voltage Un: 240/480 V | System: Split phase 3W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-120SPC100-T1-ALRated voltage Un: 120/240 V | System: Split phase, N-G mode deleted | MCOV: 150 V | Surge capacity: 100 kA
USPB-240SPC100-T1-ALRated voltage Un: 240/480 V | System: Split phase, N-G mode deleted | MCOV: 320 V | Surge capacity: 100 kA
USPB-120S100-T1-ALRated voltage Un: 120 V | System: Single phase 2W+G | MCOV: 150 V | Surge capacity: 100 kA
USPB-127S100-T1-ALRated voltage Un: 127 V | System: Single phase 2W+G | MCOV: 150 V | Surge capacity: 100 kA
USPB-240S100-T1-ALRated voltage Un: 220-240 V | System: Single phase 2W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-277S100-T1-ALRated voltage Un: 277 V | System: Single phase 2W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-347S100-T1-ALRated voltage Un: 347 V | System: Single phase 2W+G | MCOV: 420 V | Surge capacity: 100 kA
USPB-120Y100-T1-ALRated voltage Un: 120/208 V | System: Three phase WYE 4W+G | MCOV: 150 V | Surge capacity: 100 kA
USPB-127Y100-T1-ALRated voltage Un: 127/220 V | System: Three phase WYE 4W+G | MCOV: 150 V | Surge capacity: 100 kA
USPB-240Y100-T1-ALRated voltage Un: 240/415 V | System: Three phase WYE 4W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-277Y100-T1-ALRated voltage Un: 277/480 V | System: Three phase WYE 4W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-347Y100-T1-ALRated voltage Un: 347/600 V | System: Three phase WYE 4W+G | MCOV: 420 V | Surge capacity: 100 kA
USPB-120YC100-T1-ALRated voltage Un: 120/208 V | System: WYE, N-G mode deleted | MCOV: 150 V | Surge capacity: 100 kA
USPB-127YC100-T1-ALRated voltage Un: 127/220 V | System: WYE, N-G mode deleted | MCOV: 150 V | Surge capacity: 100 kA
USPB-240YC100-T1-ALRated voltage Un: 240/415 V | System: WYE, N-G mode deleted | MCOV: 320 V | Surge capacity: 100 kA
USPB-277YC100-T1-ALRated voltage Un: 277/480 V | System: WYE, N-G mode deleted | MCOV: 320 V | Surge capacity: 100 kA
USPB-347YC100-T1-ALRated voltage Un: 347/600 V | System: WYE, N-G mode deleted | MCOV: 420 V | Surge capacity: 100 kA
USPB-240D100-T1-ALRated voltage Un: 240 V | System: Three phase DELTA 3W+G | MCOV: 320 V | Surge capacity: 100 kA
USPB-480D100-T1-ALRated voltage Un: 480 V | System: Three phase DELTA 3W+G | MCOV: 550 V | Surge capacity: 100 kA
USPB-120H100-T1-ALRated voltage Un: 120/240 V | System: High-leg DELTA 4W+G | MCOV: 150/320 V (H) | Surge capacity: 100 kA
USPB-240H100-T1-ALRated voltage Un: 240/480 V | System: High-leg DELTA 4W+G | MCOV: 320/550 V (H) | Surge capacity: 100 kA
USPB-120HC100-T1-ALRated voltage Un: 120/240 V | System: High-leg DELTA, N-G mode deleted | MCOV: 150/320 V (H) | Surge capacity: 100 kA
USPB-240HC100-T1-ALRated voltage Un: 240/480 V | System: High-leg DELTA, N-G mode deleted | MCOV: 320/550 V (H) | Surge capacity: 100 kA

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