SKU: KC3E/340A
ONESTO DIN RAIL 40A 3KA 3P CIRCUIT BREAKER
ONESTO DIN RAIL 40A 3KA 3P CIRCUIT BREAKER
In stock
Description
Description
The Onesto 40A 3P 3kA Mini Circuit Breaker delivers dependable three‑phase circuit protection for a range of installations — from domestic three‑phase supplies to light‑industrial power distribution. Its 3‑pole design disconnects all live conductors simultaneously, ensuring full circuit isolation and enhanced safety, especially in multi‑phase wiring systems or where balanced load protection is critical.
With a 40A per‑pole rating and a short‑circuit breaking capacity of 3 kA, this breaker is engineered to safely interrupt overloads or fault currents, helping to protect wiring, connected equipment, and appliances. The thermal‑magnetic (C‑curve) tripping mechanism offers a good balance: sensitive enough to respond under fault conditions but tolerant of normal current surges or inrush currents, which are common with motors or inductive loads.
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Type: Miniature Circuit Breaker (MCB), Triple‑Pole (3P)
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Rated Current (In): 40 Amps — suitable for medium‑to‑high load three‑phase circuits.
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Number of Poles / Configuration: 3‑pole — disconnects all three live conductors (for 3‑phase systems or three‑wire configurations) for full circuit isolation.
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Breaking Capacity (Icu / Ics): 3 kA — safely interrupts overloads or short‑circuit fault currents up to 3000 A.
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Rated Operational Voltage (Ue): 220V (for domestic/standard supply) — typical for Onesto 3‑pole 40A breaker.
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Tripping Mechanism / Curve: Thermal‑magnetic (C‑curve) — balanced protection against overloads and short‑circuit conditions; suitable for general‑purpose loads.
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Mounting / Form Factor: DIN‑rail mount (standard 35 mm rail) — allows easy installation in 3‑phase breaker panels, distribution boards or consumer units.
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Protection Provided: Overload protection & short‑circuit protection — safeguards wiring, equipment, and connected devices against electrical faults.
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Typical Applications: Three‑phase circuits in residential, commercial or light‑industrial settings; motors, three‑phase equipment, sub‑panels or power distribution lines requiring 40 A per phase protection.
Dimensions
Dimensions
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- H:
- Cord:
- Ceiling Cup:
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