1SFL427101R1211 af140-40-11-12 75kw/140 amp 48-130v 50/60hz dc ABB Contactor

Why Choose the ABB AF140-40-11-12 Contactor?

The ABB AF140-40-11-12, part number 1SFL447101R1211, is a high-capacity 4-pole industrial contactor designed for demanding motor control and power switching applications. As part of the advanced ABB AF contactor range, it incorporates ABB’s electronically controlled coil technology to provide reliable operation across a wide control voltage range while reducing energy consumption and improving operational stability.

Designed for industrial automation systems, power distribution equipment and OEM machinery, the AF140-40-11-12 controls motors up to 75 kW at 400 V AC under AC-3 duty while switching power circuits up to 200 A AC-1. Integrated surge suppression technology helps simplify control panel layouts while protecting sensitive control circuits from transient voltages.

Its robust industrial construction, combined with pre-mounted auxiliary contacts and a wide-range 48–130 V AC/DC electronic coil, makes this contactor ideal for heavy-duty industrial switching applications requiring dependable long-term performance and international voltage compatibility.

Key Advantages

• Heavy-duty 4-pole industrial contactor for demanding switching applications.
• 75 kW AC-3 motor control capability at 400 V AC.
• 48–130 V AC/DC wide-range electronic coil.
• Integrated surge suppression reduces external component requirements.
• Pre-mounted 1 NO + 1 NC auxiliary contacts.
• Reliable operation during fluctuating control voltage conditions.

Key Features

• ABB AF contactor series.
• 4 normally open main poles.
• 140 A AC-3 operational current.
• 200 A AC-1 operational current.
• 48–130 V AC/DC electronic coil interface.
• Integrated surge protection technology.
• Pre-installed 1 NO + 1 NC auxiliary contacts.
• Double clamp screw terminal connections.

Technical Specifications

• Manufacturer: ABB
• Series: AF Contactors
• Model: AF140-40-11-12
• Part number: 1SFL447101R1211
• Product type: Industrial power contactor
• Number of poles: 4
• Main contacts: 4 NO
• Auxiliary contacts: 1 NO + 1 NC
• Rated operational current AC-3: 140 A
• Rated operational current AC-1: 200 A
• Motor power AC-3 at 400 V: 75 kW
• Rated operational voltage: 690 V IEC
• Rated insulation voltage: 1000 V IEC
• Control voltage: 48–130 V AC/DC
• Frequency: 50 / 60 Hz
• Mounting type: Panel mounting
• Connection type: Double clamp screw terminals
• Protection feature: Integrated surge suppression
• Dimensions (H × W × D): approx. 150 × 120 × 128 mm
• Weight: approx. 2.05 kg

Reliable Switching for Industrial Power Systems

The ABB AF140-40-11-12 is engineered for industrial switching applications where reliability, electrical durability and operational uptime are essential. ABB’s AF electronic coil technology allows the contactor to maintain stable switching performance during substantial voltage fluctuations while reducing coil energy consumption.

Integrated surge suppression technology helps minimise electrical disturbances and eliminates the need for many external suppressors, simplifying panel design and reducing installation complexity. The AF series is trusted globally by industrial automation engineers, panel builders and OEM machine manufacturers.

Typical Applications

• Industrial motor control systems.
• HVAC and ventilation equipment.
• Conveyor and material handling systems.
• Pumps and compressors.
• OEM machinery and automation panels.
• Industrial power distribution and switching systems.

Trusted by Industrial Automation Professionals

ABB AF contactors are trusted worldwide for dependable industrial switching performance, advanced electronic coil technology and reliable operation in demanding automation and power control systems.