Hager SBN463 4P Isolator – 4-Pole modular isolator, ~63 A rating.
Hager 63A 4P Weatherproof Isolator JG463IN – Weatherproof 40 A 4P isolator (outdoor).
Hager SBN490 4P Switch Disconnector – 4-Pole 100 A isolator switch.
Hager HIM404 4P On load Switch – Heavy 4P DIN-rail rated device (40 A, IP20).
A 4-Pole isolator switch provides a reliable means to disconnect all 3 phase conductors plus neutral manually, creating a visible and positive break in the circuit. This allows safe maintenance, servicing, or emergency shutdown of three-phase electrical systems.
40 A – 63 A units: Common for small to medium three-phase loads and distribution boards.
80 A – 100 A units: Suitable for larger machines, heavier loads, or larger panel main switches.
Weatherproof isolators (IP66): Useful for outdoor installations or harsh environments like industrial yards and exterior equipment rooms.
An isolator does not provide overload or short-circuit protection — it’s for manual disconnection only. You should use it together with protective devices like MCBs, MCCBs, RCCBs, or RCBOs upstream.
Ratings should be chosen based on the maximum current and voltage of the circuit being isolated.
Malaysia
