The load output features full electronic short circuit protection under both mains and standby battery operation. Maximum battery life is assured through continuous active battery monitoring and 3 different charge levels: bulk (fast charge), absorption and temperature compensated float. Deep discharge protection prevents premature battery failure when operating from standby for extended periods.

Inside the unit, a diagnostic led with various flash patterns, ensure accurate diagnostics when the unit is at fault.

Installer friendly

A 9-30841 power supply is supplied in a self-contained, wall mounting box that can also house 17 Ah batteries (not included). The battery charging circuit is energised only when a battery is correctly connected and the battery voltage is greater than 14 V.

A green and a red LED that is visible when the box is closed, indicates mains present and faults. A red diagnostics LED inside the unit, distinguish between various faults by way of various flash patterns.

A potential-free contact is used to signal faults due to output failure, battery fault, charger fault or internal fault. A second potential-free contact signals the loss of mains power.

The unit starts-up automatically under battery i.e. connect battery and unit runs. There is no need for mains to be present and is very useful for commissioning on new build installations.