Why this FAQ?
Built for engineers and buyers evaluating the ABB A40-30-10 contactor, this FAQ distills key ratings, application limits, and standards for quick selection. For any gaps or project-specific checks, Shansen can confirm against the latest ABB datasheet.
What is the ABB A40-30-10 220–230V 50Hz contactor and where is it used?
A40-30-10 is a 3-pole, block-type ABB A-series contactor for controlling 3-phase motors and power circuits up to 690 V AC or 220 V DC. It has 3 NO main contacts and one built-in NO auxiliary. Typical uses include motor control (AC-3), isolation, capacitor switching (AC-6b), and lighting loads.
What are the AC-3 motor ratings (power and current) for the A40 at 55 °C?
AC-3 motor power: 11 kW @ 220/230/240 V; 18.5 kW @ 380/400/415 V; 22 kW @ 440/500/690 V. AC-3 operational current Ie: 40 A @ 220/230/240 V; 37 A @ 380/400/415/440 V; 33 A @ 500 V; 25 A @ 690 V (all at 55 °C).
What coil/control voltages and coil consumption does it have?
Rated control circuit voltage (Uc): 220–230 V 50 Hz / 230–240 V 60 Hz. Typical coil consumption: pull-in ~125 VA @ 50 Hz (120 VA @ 60 Hz); holding ~12 VA (typical). Device frequency limits are 25–400 Hz; coil is AC-operated with a laminated magnet circuit.
How many auxiliary contacts are included and can I add more?
It includes 1 built-in NO auxiliary contact. Front- and side-mounted auxiliary blocks are available for expansion; use A-series compatible accessories. For exact aux contact combinations and contact labelling, refer datasheet / contact Shansen for confirmation.
What are the switching frequencies and operating times?
Max mechanical switching frequency: 3600 cycles/hour. Max electrical switching frequency: AC-1 600 cph, AC-2/AC-4 300 cph, AC-3 1200 cph. Operate times: 8–21 ms (coil energization to NO closing) and 4–11 ms (coil de-energization to NO opening).
What are the AC-1, AC-15, and DC-13 ratings?
AC-1 Ie @ 690 V: 60 A (40/55 °C) and 42 A (70 °C). AC-15 Ie: 6 A @ 24/127 V, 4 A @ 220/240 V, 3 A @ 380/440 V, 2 A @ 500/690 V. DC-13 Ie (L/R): 6 A @ 24 V (144 ms), 2.8 A @ 48 V (134 ms), 2 A @ 72 V (144 ms), 1.1 A @ 125 V (138 ms), 0.55 A @ 250 V (138 ms).
What insulation, making/breaking capacities, and standards apply?
Main circuit Ue up to 690 V AC; rated insulation Ui: 1000 V (IEC 60947-4-1 / VDE 0110 Gr. C), and 600 V Ui per UL/CSA. AC-3 making capacity: 10 × Ie; AC-3 breaking capacity: 8 × Ie; AC-15 breaking capacity: 10 × Ie. Designed to IEC 60947-4-1 and IEC 60947-5-1; for specific certifications/approvals, refer datasheet / contact Shansen.
What are the ambient temperature limits and any installation notes?
Storage: −60 to +80 °C. Operation (without thermal O/L relay, 0.85…1.1 Uc): −40 to +55 °C; with thermal O/L relay: −25 to +55 °C. Use screw terminals; ensure proper conductor sizing and torque per datasheet. Conventional free-air thermal current Ith: 65 A (IEC 60947-4-1, main circuit); 16 A (IEC 60947-5-1, aux).
Can it switch power-factor correction capacitors (AC-6b)?
Yes. AC-6b capacitor duty approx.: 15 kVAr @ 230/240 V at 40/55 °C (12 kVAr at 70 °C) and 26 kVAr @ 400/415 V at 40/55 °C (20 kVAr at 70 °C). For 440 V and other variants, refer datasheet / contact Shansen.
How do I source this model in India and what logistics should I expect?
Shansen Enterprises is an authorized channel partner for ABB with pan-India delivery (Tamil Nadu base). Quick WhatsApp quotes, GST invoice, and support on selection/accessories are available. Unit is Made in India; typical package ~0.71 kg (approx. logistics weight).
