Technical Specifications
Specification Value / Description
Contactor Type Miniature 3‑pole contactor
Main Contacts 3 × Normally‑Open (NO)
Auxiliary Contacts Typically none
Rated Main-Circuit Voltage (Ue) Up to 690 V AC
Insulation Voltage (Ui) 690 V AC
Impulse Withstand Voltage (Uimp) 6 kV
Rated Operational Current (AC‑1, Ie) 20 A @ 220–240 V AC (40 °C) / 16 A (55 °C)
20 A @ 380–440 V AC (40 °C) / 16 A (55 °C)
6 A @ 690 V AC
Rated Operational Power (AC‑3, Motor Load) ~3.0 kW @ 230 V AC three‑phase
~5.5 kW @ 400 V AC three‑phase
~3.0 kW @ 690 V AC three‑phase
Short-Time Withstand Current (Icw) 96 A for 10 s (cold start, free air, 40 °C ambient)
Rated Coil / Control Voltage (Uc) Depends on variant — e.g., 12 V DC or other AC/DC versions
Electrical / Mechanical Life Mechanical life up to ~10 million operations; switching frequency moderate (mini‑contactor class)
Terminal / Connection Screw terminals or solder-pin for main circuit; terminals for coil as per variant
Environmental / Operating Conditions Operating ambient: –25 … +55 °C; Storage: –40 … +80 °C; suitable for installation up to ~2000 m altitude
Typical Applications
Small three‑phase motors (pumps, fans, small compressors)
Light/medium industrial loads, control circuits, lighting, HVAC
Compact control panels or automation cabinets where space is limited
General AC switching where a small, reliable, and economical contactor is needed
The ABB BC7‑30‑10 is a compact 3‑pole mini‑contactor from ABB’s BC7 series, designed for switching small to moderate three‑phase AC loads and general power circuits. It features three main normally‑open contacts (3 NO) and is suitable for relatively low to modest currents, making it ideal for small motors, control panels, lighting, pumps, HVAC systems, or other light-to-medium load applications. It accepts a variety of coil/control voltage options depending on the variant and supports screw-terminal or solder-pin main-circuit connections. Its compact design allows installation in space-constrained panels or automation cabinets.