Littelfuse SB4000 Industrial Shock Block
Littelfuse SB4000 Industrial Shock Block provides advanced protection for complex electrical setups while offering easy installation and superior precision in shock risk detection. This device is available in single-phase, split-phase, three-phase, and four-wire systems with a 208V to 240V voltage rating for 30A branch circuits. The block is equipped with connections for a neutral wire that has built-in grounded-neutral protection per UL 943. Additional features include advanced harmonic filtering, an automatic self-test feature, IP69K/NEMA 4X protection, and an outdoor-rated enclosure. Littelfuse SB4000 Industrial Shock Block is available as a Class A Ground-Fault Circuit Interrupter (GFCI), allowing new construction or retrofit projects to meet NEC 210.8. Typical applications include agriculture, amusement parks, commercial kitchens, construction, food and beverage, HVAC equipment, maintenance shops, manufacturing, mining sites, and marinas.
Features
- UL 943 inverse time trip curve
- Advanced digital filtering algorithm
- Streamlined design
- Fixed 6mA (UL 943) trip level
- Quick install and configuration
- Equipped with conformally coated circuit boards to protect against corrosion and moisture
- Automatic self-test
Applications
- Agriculture
- Amusement parks
- Commercial kitchens
- Construction
- Food and beverage
- HVAC equipment
- Maintenance shops
- Manufacturing
- Marinas
- Mining sites
- Oil and gas
- Pools, spas, fountains, and water features
- Vehicle service centers
- Water/wastewater
Specifications
- System type
- 3-phase, 3-wire, and 60Hz
- 3-phase, 4-wire, and 60Hz
- Split-phase, 3-wire, and 60Hz
- Single-phase, 2-wire, and 60Hz
- 208V/120V, 240V/120V, 208V, and 240V voltage rating
- For use on 30A branch circuits and a maximum continuous FLA of 26A
- 10,000A short-circuit current rating
- IP69K and NEMA 4X (outdoor), polycarbonate enclosure
- -35°C to +40°C operating temperature range, up to +66°C with derating
Videos
Circuit Diagram
Dimensions
