What is an Anderson plug used for in a solar system?

An Anderson plug creates a quick-connect, tool-free DC junction between a battery bank and an inverter or charge controller. It is rated for continuous DC current and locks under spring tension to prevent accidental disconnection. In a solar battery backup system, Anderson plugs allow the battery to be safely disconnected for maintenance without disturbing the rest of the wiring.

What is the difference between an Anderson plug and a Brad Harrison plug?

They are the same connector. Brad Harrison is a manufacturer name that became a common term for SB-style Anderson connectors in South Africa, similar to how "Hoover" is used for vacuum cleaners. The 50A red and grey connectors stocked at SP-Energy are compatible with connectors sold under both the Anderson and Brad Harrison name at other suppliers.

What cable size fits a 50A Anderson plug?

The 50A Anderson plug accepts cable up to 35mm² in cross-section. For most residential battery-to-inverter connections using a 5kW or 8kW hybrid inverter, 16mm² or 25mm² cable is commonly used. The cable cross-section must be sized for the continuous DC current of the installation, not just the Anderson plug's rated current. SP-Energy recommends following the inverter manufacturer's wiring specification for the correct cable size.

Can I use a red and grey Anderson plug together as a pair?

No. The red and grey 50A Anderson plugs are keyed differently and will not mate with each other. This prevents accidental polarity reversal during connection. Use red on both sides of the positive connection and grey on both sides of the negative connection. Order the correct quantity of each colour for your installation before starting the wiring.

What does the Mini Anderson to PV Connector adapter do?

The Mini Anderson Plug to PV Connector adapter connects a mini Anderson plug lead to an MC4 solar panel connector. This is useful for portable solar setups, folding panel charge rigs, and charge controller installations where the panel side uses MC4 connectors and the battery or controller side uses mini Anderson plugs. It eliminates the need to repin or re-terminate either connector.

Where can I buy Anderson plugs and Brad Harrison plugs in South Africa?

SP-Energy stocks the 50A Anderson Plug in red and grey plus the Mini Anderson Plug to PV Connector at 7 warehouses nationwide. Collection is available in Vanderbijlpark and Cape Town. Order online for delivery to all provinces in 2-5 working days. Browse the complete Cables and Connectors range for battery cables, MC4 connectors, and solar wiring accessories.

Anderson Plugs

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Anderson Plug – 50A Grey
R50.00 incl VAT
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Anderson Plug – 50A Red
R50.00 incl VAT
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50A Anderson Plug to Battery Cable 1.5m
R300.00 incl VAT
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Mini Anderson Plug to PV Connector
R250.00 incl VAT
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Anderson Plugs

Anderson Plug – 50A Grey

Anderson Plug – 50A Red

50A Anderson Plug to Battery Cable 1.5m

Mini Anderson Plug to PV Connector

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