40A Single Pole B Curve MCB Miniature Circuit Breaker For Residential And Light Commercial Panels

This 40A Single Pole B Curve MCB is a compact, trustworthy overcurrent protection device designed for single-phase electrical circuits. It’s ideal for residential and light commercial panels where reliable, fast response to overloads and short circuits is essential.

• Current rating: 40A capacity for protecting branch circuits up to 40 amps in 1‑phase systems.
• Pole configuration: Single Pole design for a single live conductor in a typical 1‑phase distribution.
• Tripping curve: B curve, delivering a fast instantaneous trip at 3–5 times the rated current to limit fault current exposure.
• Protection type: Thermal‑magnetic mechanism providing protection against both overloads and short circuits.
• Application: Suited for use in standard electrical panels and distribution boards in homes and light commercial settings.

This MCB helps minimize insulation wear, reduces the risk of electrical fires, and simplifies fault recovery. Its resettable design enables quick restoration after a fault, maintaining ongoing circuit safety with predictable, consistent performance.