Technical Specifications
Specification Value / Description
Contactor Type 3‑pole mini‑contactor (non-reversing)
Main Contacts 3 × Normally‑Open (NO)
Auxiliary Contacts 1 × Normally‑Open (NO)
Coil / Control Circuit DC coil, rated 17–32 V DC, coil power ≈ 2.4 W
Rated Main-Circuit Voltage (Ue) Up to 690 V AC
Rated Insulation Voltage (Ui) 690 V AC
Impulse Withstand Voltage (Uimp) 6 kV
Rated Operational Current (AC‑1, Ie, resistive/general load) 20 A @ 220–240 V AC (40 °C)
16 A @ 220–240 V AC (55 °C)
20 A @ 380–440 V AC (40 °C)
16 A @ 380–440 V AC (55 °C)
6 A @ 690 V AC
Rated Motor (AC‑3) Load / Power 3 kW @ 230 V AC three-phase
5.5 kW @ 400 V AC three-phase
5.5 kW @ 500 V AC three-phase
3 kW @ 690 V AC three-phase
Short-time Withstand Current (Icw) 96 A for 10 s (cold start, free air, 40 °C ambient)
Coil Operating Limits 0.85 … 1.10 × Uc
Mechanical / Electrical Endurance Up to 10,000,000 switching cycles
Connection / Terminals Flat‑pin or solder‑pin, suitable for small conductor cross-section
Mounting DIN‑rail or panel mounting; compact footprint
Ambient / Environmental Conditions Operating: –25 °C … +55 °C; Storage: –40 °C … +80 °C; Max installation altitude: ~2000 m
The ABB BC7‑30‑10‑2.4 is a compact 3‑pole mini‑contactor from ABB’s BC7 family, designed for switching small to medium 3-phase or single-phase AC loads, as well as general-purpose resistive or motor loads. The “2.4” suffix indicates a low-power DC coil variant (17–32 V DC, 2.4 W), which enables control from low-voltage DC control circuits, such as PLC outputs or control logic systems. The contactor provides three main normally‑open contacts (3 NO) for the main circuit and one auxiliary normally‑open contact (1 NO) for control or signaling use. Its compact size, modest power ratings, and low coil power consumption make it suitable for control panels, building automation, small motor starters, HVAC, lighting, and other light-to-medium duty switching applications.