• Siemens SENTRON 8US2 CrossBoard busbar system (125/250 A)
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Siemens SENTRON 8US2 CrossBoard busbar system (125/250 A)

Siemens SENTRON 8US2 CrossBoard busbar system (125/250 A)

Siemens 8US2 CrossBoard busbar system with touch-protected base systems of 125 A and 250 A, front and rear connection modules, adapters for modular devices, switchgear and 3VA MCCBs, and a 24 V DC power supply unit.

Key features

  • Base systems 125 A (225/405 mm) and 250 A (300-1100 mm wide)
  • Front connection modules up to 125 A, rear connection modules up to 320 A
  • 1-pole adapters for modular installation devices with L1/L2/L3 infeed
  • 3-pole adapters for switching devices (screw or spring-loaded), 3VA MCCBs and fuse holders
  • 10 A power supply unit snapping onto the base system for 24 V DC loads

Specifications

Brand Siemens
Product line SENTRON 8US2 CrossBoard
Busbar spacing 60 mm
Rated operational voltage 690 V AC (IEC), 600 V AC (UL 508)
Touch protection IP20
Source Siemens Catalog LV 10 · 2026, p. 936-942
8US2300-3LL00 Component: Base system | Version: Mounting plate or DIN rail | Rating: 125 A | Width: 225 mm
8US2300-3QM00 Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 300 mm
8US2300-3QN00 Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 400 mm
8US2300-3LN00 Component: Base system | Version: Mounting plate or DIN rail | Rating: 125 A | Width: 405 mm
8US2300-3QP00 Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 500 mm
8US2300-3QQ00 Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 600 mm
8US2300-3QR00 Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 700 mm
8US2300-3QS00 Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 800 mm
8US2300-3QT00 Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 900 mm
8US2300-3QU00 Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 1000 mm
8US2300-3QV00 Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 1100 mm
8US2981-0AA00 Component: Mounting module for 250 A base system | Version: Width ≥ 800 mm / ≥ 35 kg / ≥ 60 °C
8US2933-3HC00 Component: Connection module, front | Version: Cables up to 16 mm² | Rating: 63 A
8US2933-3LE00 Component: Connection module, front | Version: Cables up to 50 mm² | Rating: 125 A
8US2952-3QJ00 Component: Connection and mounting module, rear | Version: Terminals on one side | Rating: 250 A
8US2942-3RJ00 Component: Connection and mounting module, rear | Version: Terminals on two sides (loop-through) | Rating: 320 A
8US2901-0AH00 Component: Mounting module, rear | Version: For base systems
8US2984-0AA00 Component: Touch protection IP20 | Version: Round cable ≤ 16 mm², for 8US2933-3LE00
8US2988-0AH01 Component: Touch protection IP20 | Version: Round cable ≤ 50 mm², for 8US2952/2942
8US2988-0AH02 Component: Touch protection IP20 | Version: Flat cable, for 8US2952/2942
8US2410-1CB10 Component: Adapter 1P, modular devices | Version: Infeed L1 | Rating: 16 A IEC / 16 A UL | Width: 18 mm
8US2410-1CB20 Component: Adapter 1P, modular devices | Version: Infeed L2 | Rating: 16 A IEC / 16 A UL | Width: 18 mm
8US2410-1CB30 Component: Adapter 1P, modular devices | Version: Infeed L3 | Rating: 16 A IEC / 16 A UL | Width: 18 mm
8US2410-1HB10 Component: Adapter 1P, modular devices | Version: Infeed L1 | Rating: 63 A IEC / 63 A UL | Width: 18 mm
8US2410-1HB20 Component: Adapter 1P, modular devices | Version: Infeed L2 | Rating: 63 A IEC / 63 A UL | Width: 18 mm
8US2410-1HB30 Component: Adapter 1P, modular devices | Version: Infeed L3 | Rating: 63 A IEC / 63 A UL | Width: 18 mm
8US2410-3CE01 Component: Adapter 3P, switching devices | Version: Screw terminal | Rating: 16 A IEC / 12 A UL | Width: 45 mm
8US2410-3CE02 Component: Adapter 3P, switching devices | Version: Spring-loaded terminals | Rating: 16 A IEC / 12 A UL | Width: 45 mm
8US2410-3EE01 Component: Adapter 3P, switching devices | Version: Screw terminal | Rating: 25 A IEC / 25 A UL | Width: 45 mm
8US2410-3FE01 Component: Adapter 3P, switching devices | Version: Screw terminal | Rating: 32 A IEC / 30 A UL | Width: 45 mm
8US2410-3FE02 Component: Adapter 3P, switching devices | Version: Spring-loaded terminals | Rating: 32 A IEC / 30 A UL | Width: 45 mm
8US2410-3NH01 Component: Adapter 3P, 3VA MCCBs | Version: 3VA10, 3VA11, 3VA51 | Rating: 144 A IEC / 125 A UL | Width: 90 mm
8US2410-3CC07 Component: Adapter 3P with fuse holders | Version: 10 × 38 mm/Class CC, rail, w/o fuse | Rating: 16 A IEC / 12.5 A UL | Width: 22.5 mm
8US2400-0AB00 Component: Device holder | Version: Without electrical connection | Width: 18 mm
8US2400-0AE00 Component: Device holder | Version: Without electrical connection | Width: 45 mm
8US2988-0AE00 Component: Expansion kit (45 mm adapters) | Version: Direct-on-line starters
8US2988-0AE01 Component: Expansion kit (45 mm adapters) | Version: Reversing starters
8US2988-0AF00 Component: Mounting rail (expansion module) | Width: 54 mm
8US2830-2BE01 Component: Power supply unit | Version: Stabilized, 24 V DC loads | Rating: 10 A | Width: 45 mm
Busbar SystemsSiemens
39 product codes available in this family
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Siemens SENTRON 8US2 CrossBoard busbar system (125/250 A)

Brand Siemens·Busbar Systems

Available part numbers (39)

8US2300-3LL00, 8US2300-3QM00, 8US2300-3QN00, 8US2300-3LN00, 8US2300-3QP00, 8US2300-3QQ00, 8US2300-3QR00, 8US2300-3QS00, 8US2300-3QT00, 8US2300-3QU00 + 29 more — see full table ↓

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Product codes & specifications
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RFQ List (0)
Product codeSpec
8US2300-3LL00Component: Base system | Version: Mounting plate or DIN rail | Rating: 125 A | Width: 225 mm
8US2300-3QM00Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 300 mm
8US2300-3QN00Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 400 mm
8US2300-3LN00Component: Base system | Version: Mounting plate or DIN rail | Rating: 125 A | Width: 405 mm
8US2300-3QP00Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 500 mm
8US2300-3QQ00Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 600 mm
8US2300-3QR00Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 700 mm
8US2300-3QS00Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 800 mm
8US2300-3QT00Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 900 mm
8US2300-3QU00Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 1000 mm
8US2300-3QV00Component: Base system | Version: Mounting plate or rear modules | Rating: 250 A | Width: 1100 mm
8US2981-0AA00Component: Mounting module for 250 A base system | Version: Width ≥ 800 mm / ≥ 35 kg / ≥ 60 °C
8US2933-3HC00Component: Connection module, front | Version: Cables up to 16 mm² | Rating: 63 A
8US2933-3LE00Component: Connection module, front | Version: Cables up to 50 mm² | Rating: 125 A
8US2952-3QJ00Component: Connection and mounting module, rear | Version: Terminals on one side | Rating: 250 A
8US2942-3RJ00Component: Connection and mounting module, rear | Version: Terminals on two sides (loop-through) | Rating: 320 A
8US2901-0AH00Component: Mounting module, rear | Version: For base systems
8US2984-0AA00Component: Touch protection IP20 | Version: Round cable ≤ 16 mm², for 8US2933-3LE00
8US2988-0AH01Component: Touch protection IP20 | Version: Round cable ≤ 50 mm², for 8US2952/2942
8US2988-0AH02Component: Touch protection IP20 | Version: Flat cable, for 8US2952/2942
8US2410-1CB10Component: Adapter 1P, modular devices | Version: Infeed L1 | Rating: 16 A IEC / 16 A UL | Width: 18 mm
8US2410-1CB20Component: Adapter 1P, modular devices | Version: Infeed L2 | Rating: 16 A IEC / 16 A UL | Width: 18 mm
8US2410-1CB30Component: Adapter 1P, modular devices | Version: Infeed L3 | Rating: 16 A IEC / 16 A UL | Width: 18 mm
8US2410-1HB10Component: Adapter 1P, modular devices | Version: Infeed L1 | Rating: 63 A IEC / 63 A UL | Width: 18 mm
8US2410-1HB20Component: Adapter 1P, modular devices | Version: Infeed L2 | Rating: 63 A IEC / 63 A UL | Width: 18 mm
8US2410-1HB30Component: Adapter 1P, modular devices | Version: Infeed L3 | Rating: 63 A IEC / 63 A UL | Width: 18 mm
8US2410-3CE01Component: Adapter 3P, switching devices | Version: Screw terminal | Rating: 16 A IEC / 12 A UL | Width: 45 mm
8US2410-3CE02Component: Adapter 3P, switching devices | Version: Spring-loaded terminals | Rating: 16 A IEC / 12 A UL | Width: 45 mm
8US2410-3EE01Component: Adapter 3P, switching devices | Version: Screw terminal | Rating: 25 A IEC / 25 A UL | Width: 45 mm
8US2410-3FE01Component: Adapter 3P, switching devices | Version: Screw terminal | Rating: 32 A IEC / 30 A UL | Width: 45 mm
8US2410-3FE02Component: Adapter 3P, switching devices | Version: Spring-loaded terminals | Rating: 32 A IEC / 30 A UL | Width: 45 mm
8US2410-3NH01Component: Adapter 3P, 3VA MCCBs | Version: 3VA10, 3VA11, 3VA51 | Rating: 144 A IEC / 125 A UL | Width: 90 mm
8US2410-3CC07Component: Adapter 3P with fuse holders | Version: 10 × 38 mm/Class CC, rail, w/o fuse | Rating: 16 A IEC / 12.5 A UL | Width: 22.5 mm
8US2400-0AB00Component: Device holder | Version: Without electrical connection | Width: 18 mm
8US2400-0AE00Component: Device holder | Version: Without electrical connection | Width: 45 mm
8US2988-0AE00Component: Expansion kit (45 mm adapters) | Version: Direct-on-line starters
8US2988-0AE01Component: Expansion kit (45 mm adapters) | Version: Reversing starters
8US2988-0AF00Component: Mounting rail (expansion module) | Width: 54 mm
8US2830-2BE01Component: Power supply unit | Version: Stabilized, 24 V DC loads | Rating: 10 A | Width: 45 mm

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