Why this FAQ? These FAQs summarise key selection, wiring, application, and compliance points so engineers can specify the AL40-30-10 confidently. Where data is variant-specific, we direct you to the datasheet or Shansen for confirmation.
What is the ABB AL40-30-10 240V DC Contactor?
A 3-pole, DC-operated contactor with one built-in auxiliary (typically 1NO). It features a solid-core magnet and compact block construction for panel space efficiency. Coil is 240 V DC with polarity-sensitive terminals.
What electrical ratings does it support?
It is rated for circuits up to 690 V AC or 220 V DC. Utilization category (e.g., AC-3/AC-1) current and kW ratings depend on voltage and application—refer datasheet / contact Shansen for confirmation.
Can I drive the 240V DC coil directly from a PLC?
Yes—its low-energy DC coil is designed for direct PLC control (subject to the PLC output’s voltage and current capability). Verify the output type (transistor/relay), coil inrush/holding current, and add surge suppression if not integrated—refer datasheet / contact Shansen.
Are the coil terminals polarity sensitive? How should I wire them?
Yes. Observe A1(+) and A2(–) as marked; reversed polarity can prevent pull-in or damage accessories. Isolate supply before wiring and verify polarity at the terminals.
Is it suitable for motors, capacitor banks, lighting, and isolation?
Yes—intended for 3-phase motor control and general industrial switching, including lighting and isolation duties. For capacitor bank switching, confirm duty category and any required inrush-limiting accessories—refer datasheet / contact Shansen.
What accessories are available?
Front/side-mounted auxiliary contact blocks, mechanical interlocks, surge suppressors, timers, and busbar/terminal kits are available for flexibility. Check compatibility by exact AL40 variant—refer datasheet / contact Shansen.
How is it installed and wired?
Compact, block-type construction suits panel mounting; DIN-rail adapters may be available depending on variant—refer datasheet. Follow torque specs, correct conductor sizes, and ensure coil polarity and proper auxiliary contact configuration.
Which standards and approvals does it meet?
Industrial motor contactors of this class are generally designed to IEC 60947-4-1; confirm exact certifications/markings (IEC/UL/CE/RoHS) for the specific AL40-30-10 unit—refer datasheet / contact Shansen.
What does the “30-10” denote, and are other variants available?
“30” indicates three main NO poles; “-10” typically denotes one NO auxiliary contact. Coil voltage is specified separately (here: 240 V DC). For other aux/coil options (e.g., -11, different DC/AC coils), refer datasheet / contact Shansen for the exact mapping.
Where can I buy it in India and what’s the lead time?
Shansen Enterprises (Coimbatore) is an authorized ABB channel partner with ready stock and pan-India dispatch, typically within 48 hours. Get quick pricing and ordering support via WhatsApp for hassle-free service.
