Crabtree 73D/40 Polestar Compact 40A D Curve 16kA TP MCB

The Crabtree 73D/40 Polestar Compact Miniature Circuit Breaker is a heavy-duty 40A triple pole MCB designed to deliver reliable protection for three-phase electrical circuits subject to high inrush currents. Featuring a D curve trip characteristic and a robust 16kA breaking capacity, it is ideally suited to demanding industrial and commercial installations.

Key Features

• 40A rated current
• D curve trip characteristic (10–20 In)
• 16kA breaking capacity to BS EN 60898-1
• 15kA rating to BS EN 60947-2
• Triple pole MCB for three-phase circuit protection
• 3 module width construction
• Energy limiting Class 3 performance

Applications

Ideal for industrial and commercial three-phase installations where high inrush currents are expected, including motor control panels, transformers, compressors, and heavy machinery circuits.

Standards & Compliance

Manufactured in accordance with BS EN 60898-1 and BS EN 60947-2, ensuring compliance with current UK electrical safety standards.

Documentation

Download the manufacturer’s data sheet