Littelfuse SB5000 Industrial Shock Block

Littelfuse SB5000 Industrial Shock Block is designed for three-phase voltages from 208V to 600V with a maximum full-load current of either 32A or 60A. The power system can be either solidly or high-resistance grounded and the load must be three-phase without a neutral. The standard enclosure for Littelfuse SB5000 Industrial Shock Block is IP69K/NEMA 4X and outdoor rated, suitable for all industrial environments including high-temperature washdown used in food production. This personnel protection device is designed to meet the requirements for special-purpose GFCIs defined by UL 943C. SB5000 Industrial Shock Block includes DFT harmonic filtering and an automatic self-test feature. SB5000 is compliant with the UL 1998 Software in Programmable Components standard.

Features

UL 943 inverse time trip curve protects users while also reducing the probability of nuisance tripping
DFT filtering algorithm eliminates nuisance trips due to harmonics
<20ms minimum trip time
Fixed 6mA (UL 943) or 20mA (UL 943C) trip level
Selectable trip levels (EGFPD)

Two-stage ground monitor with Zener termination that meets UL 943C, CSA M421
Flexible configuration
Conformal coating
Auxiliary contact
Automatic self-test
GFCI Class A, C, D, and EGFPD options in one series

Specifications

208V, 480V, or 600V voltage rating
32A or 60A (continuous) current rating
Three-phase, 3-wire (no neutral), 60Hz system type
10,000A short-circuit current rating (extendable to 50,000A)
Trip level settings
- Fixed at 6mA (Class A models)
- Fixed at 20mA (Class C/D models)
- Selectable 6mA, 10mA, 20mA, 30mA, 40mA, 50mA, 60mA, 70mA, 80mA, 90mA, or 100mA (EGFPD models)
Inverse time curve trip time setting, according to UL 943

Selectable short or Zener termination, fail-safe, and CSA M421 compliant
IP69K and NEMA 4X (outdoor) lockable polycarbonate enclosure
-35°C to +40°C, up to +60°C with derating
Approvals
- UL Listed Class A GFCI (UL 943)
- UL Listed Class C, D SPGFCI (UL 943C)
- cULus Listed EGFPD (UL 943/UL 1053)
- UL 1998

Videos

Simplified Circuit Diagram

Schematic - Littelfuse SB5000 Industrial Shock Block

Connection Diagram

Application Circuit Diagram - Littelfuse SB5000 Industrial Shock Block

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