GEN3 S3P20C-O 20A Generator Inverter Mains Changeover Switch IP66

Description

Switch between two power sources, safely.

The GEN3 S3P20C-O is a 20 Amp 3 pole changeover switch rated to 500V and IP66. Its 1-0-2 action selects between two supplies with a centre-off position, so only one source connects at a time. It is built for switching between mains and a generator or inverter.

Key Features

• 20 Amp rated current
• 500 Volt rated
• 3 pole switching
• 1-0-2 changeover action with centre off
• Square type body
• IP66 dust-tight and water-jet protected
• Panel or surface mounting

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How the 1-0-2 action works

The switch has three positions: source 1, off, and source 2. The centre-off position breaks both supplies, and the mechanism allows only one source to be connected at any time. This stops two supplies being live together, the key safety requirement when switching between mains and a generator or inverter. The operator simply rotates to the source they want, or to off to isolate both.

Three-pole switching

With three poles, the switch transfers three conductors at once in a single action. This suits three-phase supplies, or single-phase installations where several conductors need to be switched together as part of the changeover. Switching all poles together keeps the transfer clean and avoids leaving a conductor connected to the wrong source.

Built for tough conditions

The IP66 rating means the switch is fully dust-tight and protected against powerful water jets, so it stands up to outdoor and exposed mounting where dust and rain are a factor. The square-type body is designed for panel or surface installation, and the 500V rating covers standard three-phase supply voltages used across Australian sites.

Q: What does the 1-0-2 marking mean?
A: It indicates the three switch positions: source 1, off in the centre, and source 2. Only one source can be selected at a time, with the off position isolating both.

Q: Can the S3P20C-O switch between mains and a generator?
A: Yes. A changeover switch selects between two supplies such as mains and a generator or inverter, ensuring only one is connected at a time. Final suitability for your installation should be confirmed by a licensed electrician.

Q: Is the S3P20C-O weatherproof?
A: It carries an IP66 rating, meaning it is dust-tight and protected against high-pressure water jets, so it is suitable for outdoor and washdown environments.