1SBL337201R6900 ABB AF45-40-00 48–130 V AC/DC Contactor

Why Choose the ABB AF45-40-00 48–130V AC/DC Contactor?

The ABB AF45-40-00, order code 1SBL337201R6900, is a 4-pole block contactor designed primarily for controlling non-inductive or slightly inductive loads such as resistance heating, as well as general industrial power circuits. It features 4 normally open main poles and a wide-range electronic coil accepting 48–130 V AC at 50/60 Hz or 48–130 V DC.

With a rated operational current of 70 A AC-1 at up to 40 °C, the AF45-40-00 is well suited to industrial load switching where four simultaneously controlled poles are required. The contactor can control power circuits up to 690 V AC and 440 V DC, supporting applications including resistance heating, lighting and general distribution switching.

ABB's AF electronic coil interface provides reliable operation across a broad control-voltage range while reducing coil power consumption and improving tolerance to control-supply variations. The electronic design also provides distinct closing and opening behaviour, quiet operation and resilience to short control-voltage interruptions, helping simplify industrial control-panel design.

Key Advantages

• Wide-range 48–130 V AC/DC electronic coil.
• Accepts 48–130 V AC at 50/60 Hz and 48–130 V DC.
• 4 normally open main poles for simultaneous four-pole switching.
• 70 A AC-1 rated operational current at up to 40 °C.
• Suitable for power circuits up to 690 V AC and 440 V DC.
• Electronic coil interface helps manage substantial control-voltage variations.
• Reduced coil power consumption compared with conventional electromagnetic coil systems.
• Suitable for front- and side-mounted ABB auxiliary contact blocks.

Key Features

• 4-pole block contactor.
• 4 NO main contacts.
• 0 NO + 0 NC built-in auxiliary contacts.
• 48–130 V AC/DC electronic control coil.
• AC control frequency range: 50/60 Hz.
• 70 A AC-1 operational current at up to 40 °C.
• Designed primarily for non-inductive and slightly inductive loads.
• Suitable for resistance heating and lighting control.
• Block-type construction with provision for add-on auxiliary contacts.
• Built-in electronic coil interface for stable contactor operation.

Wide-Range ABB AF Electronic Coil Technology

The AF45-40-00 uses ABB's electronic coil interface rather than a conventional narrow-voltage contactor coil. Its 48–130 V AC/DC operating range allows the same contactor to work with multiple control-supply voltages and helps accommodate normal voltage fluctuations, simplifying equipment design for installations with differing control supplies.

The AF coil system also provides reduced power consumption, clearly defined closing and opening behaviour and quiet operation. Its ability to withstand short voltage interruptions or dips in the control supply further supports dependable switching in industrial installations where control-circuit conditions may not always remain perfectly stable.

Typical Applications

• Resistance furnace and industrial heating control.
• Non-inductive and slightly inductive load switching.
• Industrial lighting control.
• Four-pole power switching.
• Industrial machinery and automation panels.
• Power distribution and control assemblies.
• Building-services control systems.
• Industrial installations with AC or DC control supplies.