11B145400440 - 4P CONTACTOR B145.4.00 440/480

Why Choose the 11B145400440?

The Lovato B145 four‑pole contactor (SKU 11B145400440) delivers dependable power switching with an IEC Ith (AC1) of 250 A and a versatile 440–480 VAC/DC coil. Rated Ui 1000 V and Uimp 8 kV, it provides strong insulation and surge withstand for demanding installations. Screw mounting simplifies panel integration, while compliance with IEC/EN 60947 and UL/CSA standards supports global specifications.

Engineered for longevity, this contactor offers a mechanical life of up to 10,000,000 cycles and operates reliably from −50 to 70 °C (storage −60 to 80 °C). Suitable for sites up to 3000 m and pollution degree 3, it features 18 Nm terminal tightening torque for secure connections and a robust 6340 g build. Designation: B145.

Key Benefits

• Four‑pole design for flexible power distribution and isolation.
• 250 A Ith (AC1) capacity for robust AC‑1 load switching.
• Wide 440–480 VAC/DC coil range simplifies control voltage standardisation.
• High insulation: Ui 1000 V and Uimp 8 kV for enhanced safety.
• Long mechanical life: up to 10,000,000 operations for durability.
• Broad operating temperature −50 to 70 °C for harsh environments.
• Screw mounting with 18 Nm terminal torque for secure connections.

Technical Specification

• Product type designation: B145
• Number of poles: 4
• Rated insulation voltage Ui (IEC/EN): 1000 V
• Rated impulse withstand voltage Uimp: 8 kV
• Ith (IEC): 250 A
• Terminal tightening torque: 18 to 18 Nm
• Weight: 6340 g
• Mechanical life: 10000000 cycles
• Operating temperature: -50 to 70 °C
• Storage temperature: -60 to 80 °C
• Max altitude: 3000 m
• Pollution degree: 3

What’s Included

• Lovato B145 four‑pole contactor, SKU 11B145400440
• Manufacturer datasheet (downloadable via product page)
• Original manufacturer packaging

Applications

• Switching AC‑1 loads up to 250 A per IEC rating
• Control panels using 440–480 VAC/DC coil supplies
• Installations requiring Ui 1000 V insulation and 8 kV impulse withstand
• Sites up to 3000 m altitude, pollution degree 3 environments
• Projects needing IEC/EN 60947, UL and CSA conformity

Safety note: Install and commission only by qualified personnel with power isolated. Follow the specified ratings and standards, and apply the 18 Nm terminal torque to ensure safe, reliable operation.