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Compact molded-case breaker for feeders and sub-mains. Frame 160 A, 3P/4P, breaking-capacity options (T1B / T1N / T1S / T1H). Thermal-magnetic (TMD) trip, wide accessory set (aux, shunt, UVR, handles). Proven legacy platform used worldwide.
Brand / Series | ABB — SACE Tmax T |
Model | T1 (frame 160 A) |
Standards | IEC/EN 60947-2 |
Poles | 3P or 4P |
Frame Size | 160 A frame |
Rated Voltage | Up to 690 V AC, 50/60 Hz (variant-dependent) |
Breaking Capacity Codes | T1B / T1N / T1S / T1H (Icu varies by code & voltage) |
Trip Unit | TMD thermal-magnetic (adjustable ranges per In) |
Rated Current (In) | Commonly 16…160 A (variant-dependent) |
Mounting | Fixed; plug-in kit available |
Accessories | Aux contacts, OF/SD, shunt trip, undervoltage release, rotary handle, motor operator, terminal shrouds |
Typical Uses | Feeders, sub-mains, motor feeders; legacy boards and service replacements |
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T1 is typically supplied with TMD thermal-magnetic trips. If you need advanced LSI/LSIG functions and wider settings, consider moving to Tmax XT1 with Ekip electronic trips or a larger T-frame that supports electronic units.
They are breaking-capacity classes. Each code specifies a different Icu/Ics at common voltages (e.g., 400/415/440/690 V). Pick a class that exceeds your calculated fault level with margin.
Common in modernization. Check dimensions, terminal positions, accessories, and protection settings. Use ABB’s retrofit/migration guidance to ensure mechanical and electrical equivalence.
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