Product Description
The Fuji Electric SG33B 10A is a 3-pole Earth Leakage Circuit Breaker (ELCB) from Fuji's SG series, part of the G-TWIN product family. It features a 30AF frame with a 10-amp rated current and is designed to provide simultaneous overcurrent, short-circuit, and ground-fault protection in industrial and commercial power distribution systems. The SG33B conforms to JIS and IEC 60947-2 international standards and includes a built-in test button for verifying the leakage tripping function. The unit is housed in a flame-retardant thermoplastic molded case (UL94 rated) and is suitable for DIN rail or panel mount installation in industrial control panels, motor branch circuits, and distribution boards.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Fuji Electric |
| Model / Part Number | SG33B 10A |
| Product Type | Earth Leakage Circuit Breaker (ELCB) |
| Series | SG Series (G-TWIN) |
| Rated Current (In) | 10 A |
| Number of Poles | 3 |
| Rated Frame Current (AF) | 30 AF |
| Rated Insulation Voltage (Ui) | AC 690 V |
| Max Rated Operational Voltage (Ue) | AC 440–550 V |
| Impulse Withstand Voltage (Uimp) | 8 kV |
| Rated Frequency | 50/60 Hz |
| Interrupting Capacity (Icu) @ 440V AC | 2.5 kA |
| Utilization Category | A |
| Trip Type | Thermal-Magnetic |
| Earth Leakage Protection | Yes — ELCB with built-in ZCT |
| Test Button | Yes |
| Mounting Type | DIN Rail or Panel Mount |
| Standards | JIS, IEC 60947-2 |
| Phase Loss Ground Fault Protection | Yes (IEC 60947-2 Revised) |
| Current Type | AC |
We warranty all items for 30 days from date of purchase.
