Hager ADA920T 20 Amps 1 Pole plus Neutral RCBO Safety Switch 6kA 30mA Type A C Curve 2 Module DIN Rail

Description

20 A 1P+N safety switch, two module.

The Hager ADA920T combines MCB and RCD protection for a 20 A final circuit, switching both active and neutral in a robust 2 module (35 mm) device. It brings full 1P+N protection to single-phase power circuits, with a built-in RCD test button and non-polarity-sensitive terminals.

Key Features

• Hager ADA920T RCBO, 1 pole plus neutral, 2 module (35 mm) wide
• 20 A rated current, C curve tripping characteristic
• 30 mA rated residual operating current, Type A
• 6 kA rated short circuit breaking capacity (Icn, IEC 60898-1)
• 230 - 240 V AC rated operational voltage
• Non-polarity-sensitive line and load terminals
• Rated insulation voltage 500 V, impulse withstand 4 kV, energy limitation class 3
• Built-in test button, screw terminals top and bottom
• Accepts 1 - 25 mm² rigid or 1 - 16 mm² flexible conductors
• Mounts on 35 mm DIN rail, IP2X rated
• Bypass bottom connection for busbar wiring
• Manufactured to IEC 60898-1, RoHS conform

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Two-Module 1P+N Protection

The ADA920T switches and protects both the active and the neutral conductor in a full-size 2 module (35 mm) body, height 83 mm and depth 68 mm. The wider format gives generous terminal access and takes rigid conductors up to 25 mm². A built-in test button lets the installer verify the RCD function, and the unit resets easily once a fault is cleared.

Non-Polarity-Sensitive Terminals

The line and load terminals are non-polarity-sensitive, so the device operates regardless of which way the supply is connected. When replacing an RCBO from another brand you can reuse the existing wiring rather than swapping active and neutral, which cuts fault-finding and install time on site.

20 A for General Power Circuits

The 20 A C curve rating suits general final subcircuits: power points, mixed power and lighting, and larger socket circuits on single-phase supplies. The C curve tolerates the ordinary inrush of everyday equipment while tripping promptly on a genuine overload or short circuit.

Type A and Australian Conditions

As a Type A RCBO the ADA920T detects both sinusoidal AC and pulsating DC earth leakage, tripping at 30 mA. Rated operational voltage is 230 - 240 V, matching the Australian supply. Hager publishes a full derating curve: 20 A at 30 °C ambient, 19.60 A at 40 °C and 18.80 A at 60 °C, plus side-by-side correction factors when devices are grouped (0.95 for three units, 0.90 for four to five). Operating range -25 to 40 °C, rated to 2000 m altitude.

Q: Is the Hager ADA920T single pole or double pole?
A: It is a 1 pole plus neutral (1P+N) device that switches and protects both the active and neutral conductors. It occupies 2 modules (35 mm) of DIN rail. The single-module equivalent is the Hager ADC920T.

Q: Do I need to match polarity when wiring the ADA920T?
A: No. The line and load terminals are non-polarity-sensitive, so the device works regardless of supply orientation, and in most cases existing wiring can be reused when replacing another brand.

Q: Does the ADA920T have a test button?
A: Yes. It has an inbuilt test switch to verify the residual current function, and resets easily once the fault is rectified. As a Type A device it trips at 30 mA residual current.