Tesla RCDM3PN16 16 Amp 3P+N RCBO Safety Switch 6kA 30mA A Type C Curve Three Module 53mm IP20

Description

Three phase earth leakage and overload protection.

The Tesla RCDM3PN16 combines a 16 A C curve circuit breaker with a 30 mA A Type residual current device across a 3P+N configuration. It covers a three phase final subcircuit in 53 mm of board width, with a 900 mm neutral lead supplied and 6000 A of breaking capacity behind it.

Key Features

• Rated current 16 A with C curve characteristic
• Rated operating current 30 mA
• A Type residual operating characteristic
• Breaking capacity 6000 A
• 3P+N configuration, active poles switched
• 53 mm width, three standard modules
• Rated voltage 400/415 V AC at 50/60 Hz
• Dielectric strength 2500 V
• Cable termination to 25 mm2
• Terminal tightening torque 2.5 Nm
• 900 mm neutral lead supplied
• IP20 degree of protection
• Mounts to 35 mm DIN rail

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Why It Matters

Three phase protection without a separate RCD

Protecting a three phase final subcircuit usually means a three pole circuit breaker upstream of a shared residual current device. This unit does both jobs in one body across three modules, so the circuit gets dedicated earth leakage protection rather than sharing it with everything else on the board.

The three active poles are the switched poles. The neutral runs through on the 900 mm lead supplied with the device, which is what gives the residual current element its reference without consuming a fourth module of board space. Total width is 53 mm on 35 mm DIN rail.

A Type is the residual characteristic modern loads call for

A Type devices respond to sinusoidal AC residual current and to pulsating DC residual current. That second category is what electronic loads generate: variable speed drives, LED drivers, switch mode power supplies, inverters and appliance electronics. A device that only handles the AC waveform can be blinded by a pulsating DC component and miss a real fault. At 30 mA the residual sensitivity sits at the figure used for personnel protection duty, and the 16 A overcurrent side handles the circuit breaker half of the job in the same body.

C curve at 400/415 V, sized for real three phase loads

The overcurrent side runs a C curve, which tolerates the inrush that three phase motors, drives and transformer fed equipment draw on start without nuisance tripping, while still clearing genuine overloads and short circuits. Rated voltage is 400/415 V AC at 50/60 Hz and breaking capacity is 6000 A.

Terminations take cable up to 25 mm2 and the terminals are torqued to 2.5 Nm. Dielectric strength is rated at 2500 V, the IP20 degree of protection suits the enclosed board environment these are designed to sit in, and the unit clips to standard 35 mm DIN rail.

Is the Tesla RCDM3PN16 an A Type or AC Type RCBO?
It is an A Type device. The residual operating characteristic is A Type, so it detects pulsating DC residual current as well as sinusoidal AC residual current. Rated operating current is 30 mA and the tripping curve is C, which suits the inrush of three phase motor and drive loads.

How much switchboard space does the Tesla RCDM3PN16 take up?
It measures 53 mm across, which is three standard modules on 35 mm DIN rail. The configuration is 3P+N with the three active poles switched and a 900 mm neutral lead supplied.

What size cable can the Tesla RCDM3PN16 terminals accept?
Cable termination is rated to 25 mm2. Tighten the terminals to 2.5 Nm. Dielectric strength is 2500 V and the degree of protection is IP20.

Warranty

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