Littelfuse SB5060-201-0, SB5000 Series, Industrial Shock Block for Personnel Protection, 60A, 480VAC, UL 943C Class C SPGFCI
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Special-Purpose Ground-Fault Circuit Interrupter (SPGFCI), Class C and Class D
The Industrial Shock Block® SB5000 series is a personnel protection device designed to meet the requirements for specialpurpose GFCIs defined by UL 943C. This standard outlines GFCI classes specifically designed for use in industrial facilities. Class C GFCIs are intended to be used on three-phase systems where the line-to-line voltage is 480 V or less with a trip level of 20 mA, while Class D GFCIs are intended to be used on 600 V systems. The Industrial Shock Block includes DFT harmonic filtering, an automatic self-test feature, and is compliant to the UL 1998 Software in Programmable Components standard.
Ratings and Models
Industrial Shock Block (GFCI & EGFPD) is available for three-phase voltages from 208 to 600 V with a maximum full load current up to 100 A. The power system can be either solidly or high-resistance grounded, and the load must be three-phase without a neutral. The standard enclosure is IP 69K/NEMA 4X and outdoor rated, suitable for all industrial environments including high temperature washdown used in food production.
Ground Wire (Load-Ground) Monitor
The Industrial Shock Block also monitors the ground wire (load-ground) connection between the Industrial Shock Block and load. This is a required feature for Class C and D GFCI devices and is recommended for Class A GFCI and EGFPD devices. If the ground-return path is broken, the Industrial Shock Block will trip and provide an alarm by changing the state of the alarm contacts. This monitoring circuit includes an extra wire (pilot wire) between the Industrial Shock Block and load. At the load, the pilot wire is connected to a termination device. The other end of the termination device is connected to the load ground (typically the enclosure).
Specifications
| Voltage Rating | 480 V |
| Current Rating | 60 A |
| System Type |
Three-phase, 3-wire (no neutral), 60 Hz; Single-phase, 2-wire (no neutral), 60 Hz; Single-phase, 3-wire (with neutral), 60 Hz for EGFPD versions only |
| Short-Circuit Current Rating | 10,000 A (for SB5032 and SB5060) |
| Trip Level Settings |
Fixed at 6 mA (Class A models); Fixed at 20 mA (Class C/D models) Selectable 6, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 mA (EGFPD models) |
| Trip Time Setting | Inverse time curve according to UL 943 |
| Ground Monitoring Circuit | Selectable short or Zener termination; Fail-safe; CSA M421 compliant |
| Enclosure | IP 69K and NEMA 4X (Outdoor), Polycarbonate, Lockable |
| Operating Temperature | -35 °C (-31 °F) to 40 °C (104 °F), up to 66 °C (151 °F) with derating |
| Dimensions |
H 285.6 mm (11.25 in.); W 244.4 mm (9.62 in.); D 119.6 mm (4.71 in.) – for 32 A and 60 A |
| Certification & Compliance | |
| UL Listed (all models) | UL1998 |
| CSA (SB5032, SB5060 models) | LR 53428 |
| cULus Listed |
Class A GFCI (UL 943) E330856 EGFPD (UL 943/UL 1053) E359574 |
| UL Listed | Class C, D SPGFCI (UL 943C) E352763 |
