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Contactor for VFD

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ABB AF Contactors with Universal Electronic Coils

ABB AF series contactors (from AF09 to AF370 and beyond up to 2850 A) set an industrial standard with electronically controlled wide-band coil technology. A single AF contactor operates across wide AC and DC voltage ranges (e.g., 100–250 V AC/DC or 24–60 V AC/DC).

This electronic coil eliminates AC hum, prevents contact chatter during mains voltage dips, and stops coil burnout. In addition, holding power consumption is reduced by up to 80%, reducing internal panel heat buildup.

Frequently Asked Questions

What is the primary benefit of ABB AF electronic coil technology?

The AF coil accepts both AC and DC across wide bands (such as 100-250 V). It operates silently without humming, rides through network voltage sags down to 50% without dropping out, and cuts holding energy by up to 80%.

Can ABB AF contactors be switched directly from PLC transistor outputs?

Yes, 24 VDC AF09..AF38 variants draw approximately 1.7 W in holding state, allowing direct solid-state PLC driving without interposing coupling relays.

Which overload relays pair with ABB AF contactors?

Thermal overload protection utilizes ABB TF42 bimetallic relays (for AF09..AF38) or EF19/EF45 electronic overload relays selectable for Class 10, 20, or 30 trip response.

What operating lifespan do ABB contactors provide?

AF contactors achieve mechanical life of up to 10 million cycles and electrical endurance exceeding 1.5 million operations under full AC-3 load.

What warranty coverage is included with ABB contactors?

ABB industrial contactors carry a 24-month manufacturer warranty with complete conformity certification.