11B25040048 - 4P CONTACTOR B250.4.00 48V

Why Choose the 11B25040048?

Lovato 11B25040048 B250 four‑pole contactor delivers reliable switching for AC‑1 duties up to 350 A. Its 48 VAC/DC universal coil simplifies control integration, while a Ui of 1000 V and Uimp of 8 kV support demanding industrial environments. Screw mounting and rugged construction are backed by IEC/EN 60947-1 and 60947-4-1 conformity, plus UL and CSA standards for global panel compatibility.

Engineered for longevity, the B250 boasts 10,000,000 mechanical cycles and dependable operation from −50 to +70 °C. Four poles and robust terminals tightened to 35 Nm ensure secure connections, with Pollution Degree 3 suitability up to 3000 m altitude. At 1080 g, the unit integrates into control panels, delivering consistent performance across demanding duty cycles.

Key Benefits

• AC-1 Ith 350 A for high-capacity power switching.
• Universal 48 VAC/DC coil simplifies control voltage management.
• Rated insulation voltage 1000 V; impulse withstand 8 kV.
• Ten million mechanical cycles for long service life.
• Wide operating temperature −50 to +70 °C performance.
• Screw mounting with 35 Nm terminal tightening torque.
• Meets IEC/EN 60947 plus UL and CSA standards.
• Four-pole configuration for versatile load arrangements.

Technical Specification

• Product type designation: B250
• Number of poles: 4
• Rated insulation voltage Ui (IEC/EN): 1000 V
• Rated impulse withstand voltage Uimp: 8 kV
• Ith (IEC): 350 A
• Terminal tightening torque: 35 to 35 Nm
• Weight: 1080 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 B250 four-pole contactor, SKU 11B25040048
• Pre-installed 48 VAC/DC coil
• Installation and safety information
• Manufacturer datasheet (PDF) available for download

Applications

• AC-1 duty switching of resistive and slightly inductive loads up to 350 A
• Power distribution and feeder switching within industrial control panels
• Heating banks, ovens and process heater control
• Four-pole isolation and changeover arrangements in low-voltage systems

Safety note: Install and commission only by qualified personnel with power isolated. Adhere to IEC/EN 60947 requirements, observe Pollution Degree 3 conditions, and tighten terminals to 35 Nm before energising.