Eaton PXL-B20/3 Miniature Circuit Breaker - 3 Pole, Type B, 20A (236393)

Inside a packed electrical cabinet, every branch circuit needs a breaker that reacts instantly to both overloads and short circuits. The Eaton PXL-B20/3 delivers that protection with a compact 3-pole design, a 20 A rating, and a Type B tripping curve—making it a straightforward choice for fixed installations in commercial and industrial settings.

Key specifications

• 3-pole miniature circuit breaker (MCB)
• Rated current: 20 A
• Tripping characteristic: Type B
• Rated voltage: 230/400 V AC
• Rated switching capacity (Icn): 10 kA
• Frequency: 50/60 Hz
• Mounting: DIN rail (EN 60715)
• Module width: 3 TE (52.5 mm)
• Terminal type: Screw terminals
• Terminal capacity: 1–25 mm² (solid and flexible)
• Degree of protection: IP20 terminals, IP40 front
• Energy limitation class: 3
• Standards: IEC/EN 60898-1
• Operating temperature: -25°C to +75°C

Why choose it

The PXL series from Eaton combines proven electromechanical reliability with a slim 3-module footprint. Its Type B characteristic is specifically intended for cable protection and general electrical circuits, tripping when the current reaches 3 to 5 times the rated value. With a 10 kA breaking capacity, it handles typical short-circuit conditions in sub-distribution boards without compromising safety.

Ideal use cases

• Protection of lighting and socket outlet circuits in residential or commercial installations
• Branch circuit protection for small appliances and HVAC equipment
• Isolation and protection for control circuits in industrial panels
• Retrofitting existing DIN-rail distribution boards

Good to know

Make sure the breaker is installed on a 35 mm DIN rail (EN 60715) and that connected cables are stripped correctly for screw terminals. The device is designed for fixed installations and should be operated within the stated temperature range. Always verify the short-circuit current at the installation point does not exceed the rated switching capacity.