P1MB1PB40 - MINIATURE CIRCUIT BREAKER 1P CURVE B 40A

Why Choose the P1MB1PB40?

Lovato’s P1MB1PB40 miniature circuit breaker delivers dependable protection for single-pole circuits up to 40 A. This 1-module, B-curve MCB features a 10 kA rating and IP20 frontal protection, backed by robust insulation (Ui 440 V) and 4 kV impulse withstand. Built for demanding conditions, it maintains performance from -40 to +70 °C and is engineered for long service with 20,000 mechanical cycles.

Conforming to IEC/EN 60898-1, IEC/EN 60947-2 and UL 1077, this Lovato miniature circuit breaker suits projects needing recognised safety standards and reliable performance. It supports installation at altitudes up to 2000 m, with terminals tightened to 1.8–2 Nm. Compact and lightweight at 115 g, the 1-module, 1P device minimises panel space while ensuring consistent operation and low power dissipation of 3.84 W per pole.

Key Benefits

• 1-module, 1P design saves space in compact panels.
• B-curve tripping characteristic for standard circuit protection.
• Rated current 40 A with 10 kA rating.
• Wide operating temperature range from -40 to +70 °C.
• IP20 frontal protection enhances user safety during operation.
• Robust insulation Ui 440 V and 4 kV impulse withstand.
• Long mechanical life of 20,000 cycles for durability.

Technical Specification

• Rated insulation voltage Ui (IEC/EN): 440 V
• Rated impulse withstand voltage Uimp: 4 kV
• Power dissipation per pole (max): 3.84 W
• Operating temperature: -40 to +70 °C
• Storage temperature: -40 to +80 °C
• Max altitude: 2000 m
• Terminal tightening torque: 1.8 to 2 Nm
• Mechanical life: 20000 cycles
• Weight: 115 g
• IP degree (frontal): IP20
• Pollution degree: 2

What’s Included

• Lovato P1MB1PB40 miniature circuit breaker (1P, B-curve, 40 A)
• Manufacturer specification sheet (downloadable)
• Protective packaging

Applications

• Single-pole circuit protection up to 40 A
• Panels requiring compact 1-module miniature circuit breakers
• Projects needing compliance with IEC/EN 60898-1 or UL 1077
• Installations operating between -40 and +70 °C
• Equipment requiring IP20 frontal protection

Safety note: Only qualified personnel should install and service this device with power isolated. Tighten terminals to 1.8–2 Nm and observe the stated ratings, temperature and altitude limits, and applicable standards.