BF18T4D125 - 4P CONTACTOR NO 32A AC1 125VDC

Why Choose the Lovato BF18T4D125 Four-Pole Contactor?

The Lovato BF18T4D125 is a compact and reliable four-pole power contactor designed for industrial control panels, motor switching circuits and automation systems requiring a 125 V DC coil. As part of the Lovato BF18 contactor range, it provides dependable switching performance in a professional screw-mounted or DIN rail-mounted format.

This contactor features a 4NO main contact arrangement, making it suitable for simultaneously switching four conductors or multiple load paths. With an AC-1 thermal current rating of 32 A and an AC-3 operating current of 18 A at 400 V, equivalent to approximately 7.5 kW, the BF18T4D125 is suitable for machinery control, resistive load switching and general industrial automation duties.

The BF18T4D125 combines a compact BF18 frame with robust DC coil operation, screw terminal connection and 35 mm DIN rail compatibility. Its 125 V DC control coil makes it a practical choice for industrial DC control systems, automation panels, machinery control circuits and maintenance replacement applications.

Key Advantages

• Four-pole Lovato BF18 contactor for industrial switching and control applications.
• 4NO main contact configuration for simultaneous multi-pole load switching.
• 32 A AC-1 thermal current rating for resistive and general-purpose loads.
• 18 A AC-3 rating at 400 V, equivalent to approximately 7.5 kW motor duty.
• 125 V DC coil for compatible DC control circuits.
• Flexible installation with screw fixing or 35 mm DIN rail mounting.
• High mechanical life of up to 20 million cycles.
• Suitable for OEM machinery, control cabinets and industrial maintenance work.

Key Features

• Lovato BF18 series power contactor.
• Four-pole design with 4 normally open main contacts.
• Rated insulation voltage Ui: 690 V.
• Rated impulse withstand voltage Uimp: 6 kV.
• DC coil operation for stable industrial control circuits.
• Operational frequency: 25 to 400 Hz.
• Maximum mechanical operating frequency: 3600 cycles per hour.
• Mechanical life: up to 20 million cycles.
• Electrical life: up to 1.6 million cycles depending on load and switching duty.
• Screw terminals for secure wiring in industrial panels.
• IP20 terminal protection when correctly wired.
• Operating temperature: -50 °C to +70 °C.

Technical Specifications

• Manufacturer: Lovato Electric
• Series: BF Contactors
• Model: BF18T4D125
• Product type: Four-pole power contactor
• Product type designation: BF18
• Contact configuration: 4NO
• Number of poles: 4
• Coil type: DC coil
• Rated coil voltage: 125 V DC
• DC coil pick-up voltage: 70 to 125% Us
• DC coil drop-out voltage: 10 to 40% Us
• Average coil consumption: 5.4 W inrush and holding
• IEC thermal current Ith AC-1 at 40 °C: 32 A
• IEC operating current AC-1 at 55 °C: 26 A
• IEC operating current AC-1 at 70 °C: 23 A
• IEC operating current AC-3 at 400 V: 18 A
• IEC operating current AC-4 at 400 V: 8.5 A
• Rated operational power AC-3 at 400 V: 7.5 kW
• Rated operational power AC-1 at 230 V: 12 kW
• Rated operational power AC-1 at 400 V: 21 kW
• Rated operational power AC-1 at 500 V: 26 kW
• Rated operational power AC-1 at 690 V: 36 kW
• Rated insulation voltage Ui: 690 V
• Rated impulse withstand voltage Uimp: 6 kV
• UL / CSA horsepower rating at 480 V: 10 HP
• UL / CSA horsepower rating at 600 V: 15 HP
• Rated operational voltage UL: 600 V AC
• General use AC current UL: 32 A
• Protection fuse: 32 A gG or 20 A aM
• Making capacity: 180 A RMS
• Breaking capacity at 440 V: 144 A
• Breaking capacity at 500 V: 120 A
• Breaking capacity at 690 V: 94 A
• Resistance per pole: approximately 2.5 mΩ
• Terminal type: Screw terminals
• Terminal tightening torque: 1.5 to 1.8 Nm
• Coil terminal tightening torque: 0.8 to 1 Nm
• Maximum flexible conductor section without lug: 6 mm²
• Cable stripping length: 10 mm main circuit, 8 mm command circuit
• Mounting type: Screw fixing or 35 mm DIN rail
• Protection rating: IP20 when correctly wired
• Operating position: Vertical plane, allowable inclination ±30°
• Operating temperature: -50 °C to +70 °C
• Storage temperature: -60 °C to +80 °C
• Maximum altitude: 3000 m
• Pollution degree: 3
• Mechanical life: 20,000,000 cycles
• Electrical life: 1,600,000 cycles
• Weight: 496 g
• Package dimensions: 93 x 48 x 110 mm
• Volume: 491.04 cm³
• EAN: 8013975166864
• HS code: 85365080
• Standards: IEC/EN/BS 60947-4-1, IEC/EN/BS 60947-1, UL 60947-4-1, UL 60947-1, CSA C22.2 60947-4-1, CSA C22.2 60947-1 and IEC/EN 60335-2-89

Reliable Four-Pole Switching for 125 V DC Control Systems

Power contactors such as the Lovato BF18T4D125 allow electrical loads to be switched from a separate control circuit, making them essential components in industrial automation, machinery control, motor switching, heating circuits and lighting control applications.

The 4NO pole arrangement is useful where four normally open circuits must be switched together. Combined with a 125 V DC coil, compact BF18 housing and DIN rail-compatible mounting, the BF18T4D125 offers a practical solution for industrial control panels using DC control supplies.

Typical Applications

• Industrial control panels and machine cabinets.
• Motor switching circuits up to the applicable AC-3 duty rating.
• Resistive load switching, heating circuits and lighting control.
• OEM machinery and automation systems using 125 V DC control circuits.
• PLC-controlled panels and DC automation systems.
• Multi-pole power switching where four normally open contacts are required.
• Conveyors, pumps, fans, packaging equipment and production machinery.
• Maintenance replacement for compatible Lovato BF18 four-pole contactors.

Trusted by Panel Builders and Automation Engineers

Lovato BF contactors are widely used by panel builders, maintenance engineers and OEM machine manufacturers who need compact, reliable and standards-compliant switching components for industrial control systems.