G-TWIN molded-case circuit breakers (MCCB) and earth leakage breakers (ELCB) 32–800 A
Country: Japan · Model: G-TWIN
Molded-case circuit breakers (MCCB) and earth leakage circuit breakers (ELCB) rated 32–800 A for protecting low-voltage lines. The same breaker is installed in equipment for Europe, America, Asia and China. They are used in switchboards, frequency converter cabinets and on machine tools.
- Frame sizes (AF)
- 32/50/63/100, 125/250, 400/630/800 A
- Types
- MCCB (line protection) and ELCB (with earth leakage protection)
- Technology
- ablative arc extinction
- Standards
- IEC 60947-2, EN 60947-2 (CE), GB 14048.2 (CCC), JIS C 8201-2-1/-2, UL 489, CAN/CSA C22.2 No.5, NEMA AB1; TÜV
Technical specifications
| Frame sizes (AF) | 32/50/63/100, 125/250, 400/630/800 A |
|---|---|
| Types | MCCB (line protection) and ELCB (with earth leakage protection) |
| Technology | ablative arc extinction |
| Standards | IEC 60947-2, EN 60947-2 (CE), GB 14048.2 (CCC), JIS C 8201-2-1/-2, UL 489, CAN/CSA C22.2 No.5, NEMA AB1; TÜV |
| ELCB features | trips on earth fault and loss of one phase (new supply scheme per IEC 60947-2); insulation tests without disconnecting wires |
| Environment | cadmium-free contacts, RoHS compliant (with exceptions) |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The series was created on the basis of the Twin Breaker and extended to the main international standards, including IEC 60947-2, EN 60947-2 with CE marking, the Chinese GB 14048.2 (CCC), the Japanese JIS C 8201-2-1 and -2-2, the American UL 489 and NEMA AB1 and the Canadian CAN/CSA C22.2 No.5. TÜV certification is also available. High breaking capacity in a compact case is provided by ablative arc extinction. Internal accessories (auxiliary contacts, trip units) are standardized in the groups 32/50/63/100 A, 125/250 A and 400/630/800 A, so selection, stocking and installation are simpler. In the ELCB a new three-phase supply scheme for the protection circuit trips on an earth fault even when one phase is lost, as the revised IEC 60947-2 requires, and wires are not disconnected during insulation tests. The contacts are cadmium-free, and the materials comply with RoHS with certain exceptions.
How to choose
The type is chosen by the kind of protection. The MCCB protects lines, and the ELCB adds earth leakage protection. The frame size (AF) covers three groups, 32, 50, 63 and 100 A, then 125 and 250 A and finally 400, 630 and 800 A, and accessories are interchangeable within a group. For high-power incomers above 800 A look at the DW air circuit breakers for 800–6300 A, and for motor switching there are SC contactors.
Request a price and lead time
G-TWIN molded-case circuit breakers (MCCB) and earth leakage breakers (ELCB) 32–800 A. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What currents does the G-TWIN cover?
From 32 to 800 A in three frame size groups, 32/50/63/100, 125/250 and 400/630/800 A.
How does the ELCB differ from the MCCB in the G-TWIN series?
The ELCB has earth leakage protection. The new supply scheme of the protection circuit trips even when one phase is lost.
Which standards do the G-TWIN breakers meet?
IEC 60947-2 and EN 60947-2 with CE marking, GB 14048.2 (CCC), JIS C 8201-2-1 and -2-2, UL 489, NEMA AB1 and CAN/CSA C22.2 No.5. TÜV certification is also available.
Can the G-TWIN be installed in equipment for Europe and the USA?
Yes, the same breaker complies with IEC and EN with CE marking, as well as UL 489 and NEMA AB1.
Do the ELCB wires need to be disconnected during an insulation test?
No, during inspections the ELCB wires do not need to be disconnected.
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