Hager SF263 63A 2 Pole Manual Changeover Switch I-0-II Centre Off

Description

Mains to generator, one 63A switch.

The Hager SF263 is a 2 pole, 63A manual changeover switch with I-0-II (centre-off) positions, letting you transfer a circuit between two power sources with a clear OFF in between. Rated 230V AC and built to handle heavier loads on 25mm2 conductors, it is well suited to mains-to-generator transfer in caravans, RVs and residential or light commercial boards.

Key Features

• 63A rated current
• 2 pole (2P) manual changeover
• I-0-II positions with centre-off isolation
• 4 modules width
• Rated operational voltage 230V AC, 50-60Hz
• Screw terminals, 25mm2 rigid / 16mm2 flexible
• Nominal tightening torque 2.9Nm
• 100,000 mechanical operations, 5,000 electrical (AC21)
• IP20, DIN rail mounting
• Rated insulation voltage Ui 500V, impulse withstand Uimp 4kV

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What Is an I-0-II Changeover Switch?

I-0-II describes the three switch positions: source I, OFF (0) in the centre, and source II. The centre-off position disconnects the circuit from both supplies, giving a safe break during transfer. The SF263 switches two poles at once, so both conductors of a single-phase circuit move together between the two sources.

Mains-to-Generator Transfer

The SF263 is built for manual transfer between a primary supply and a backup such as a generator. Its 63A rating and 25mm2 terminal capacity handle heavier feeds than the smaller modular changeover switches, and the centre-off position ensures both sources are isolated before you switch across. It mounts on standard 35mm DIN rail and occupies four modules.

Built for Heavy Duty

Rated for 100,000 mechanical operations and 5,000 electrical operations at nominal load, the SF263 is made for reliable, repeated switching. An operating temperature range of -25 to 50 degrees Celsius suits it to demanding Australian installation environments.

Q: Can the Hager SF263 switch between mains and a generator?
A: Yes. It is a manual changeover switch designed to transfer a circuit between two power sources, such as mains and a generator, with a centre-off position for safe transfer.

Q: What does the I-0-II marking mean?
A: It marks the three positions: source I, 0 (off) in the centre, and source II. The centre-off isolates the circuit from both supplies during switching.

Q: What size cable does the SF263 accept?
A: Its screw terminals take rigid conductors up to 25mm2 and flexible conductors up to 16mm2, tightened to 2.9Nm.