Tesla RCDM120-4.5kA Mini RCBO Safety Switch 20 Amp 1 Pole 4.5kA Type A 30mA 240V Electronic

Description

Twenty amps of combined protection, one module wide.

The Tesla RCDM120-4.5kA gives a 20 amp circuit its own residual current and overcurrent protection in an 18mm body. Rated 4.5 kA with 30 mA Type A detection, it drops into a single position on the rail.

Key Features

• 20 A rated current, 1 pole
• 4.5 kA rated breaking capacity
• 30 mA residual rated current
• Type A residual current sensing
• 240V AC, 50/60Hz
• 18mm width (1P+N) – single module
• Electronic MCB/RCD combination
• On/Off indicator
• 35mm DIN rail mounting
• Complies with AS/NZS 61009.1:2015
• SAA approved and ESV compliant
• Supplied in boxes of 10, cartons of 100

Order now for fast dispatch Australia-wide.

Choosing the 20 Amp Rating

Rated current is chosen to suit the cable and the load, not the appliance alone. A 20 amp device sits above the ratings used for lighting and light power runs, and it is the step taken when a circuit is carrying more than a general purpose run can comfortably support. Selecting it is a design decision made against the circuit's cable size and the calculated load, and the device then protects that circuit against overload and short circuit up to a rated breaking capacity of 4.5 kA.

The 4.5 kA figure describes fault interruption, not normal operation. It is the maximum prospective short circuit current the device is rated to break, and it is entirely separate from the 20 amp figure that governs day to day loading.

Residual Current Detection at 30 mA

Alongside the breaker element sits a residual current element with a rated tripping current of 30 mA. That threshold is the level associated with additional protection against electric shock, and it operates independently of the overload function, so a leakage fault trips the device even when the circuit is drawing well under its rated current.

Detection is classified Type A. A Type A device answers to sinusoidal AC residual currents and to pulsating DC residual currents, which is the requirement wherever the connected equipment rectifies the supply internally.

On the Board and In the Box

The Tesla product data lists this as an Electronic MCB/RCD, 18mm wide across a 1P+N arrangement, mounted to 35mm DIN rail. An On/Off indicator reports switch state without opening anything up. Rated voltage is 240V AC at 50/60Hz, which matches Australian single phase supply.

Compliance is to AS/NZS 61009.1:2015, the Australian and New Zealand standard covering residual current operated circuit breakers with integral overcurrent protection, with SAA approval and an ESV compliant listing from Tesla. Devices are supplied in boxes of 10 and cartons of 100, which suits contractors populating a board in one visit as well as anyone holding a few spares on the van.

Q: What operating mechanism does the Tesla RCDM120-4.5kA use?
A: The Tesla product data sheet describes the device as a 1 Pole MCB/RCD Electronic, rated 240V at 4.5 kA with a 30 mA Type A residual current element.

Q: Which standard does this RCBO comply with?
A: AS/NZS 61009.1:2015. The Tesla product data sheet also lists SAA approval and states the device is ESV compliant.

Q: How is the Tesla RCDM120-4.5kA supplied?
A: In boxes of 10 and cartons of 100. Individual units can be purchased on their own.

Warranty

This product is backed by an extended manufacturer warranty - click here for details.