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Timeguard TX2420 20A 30mA Solid Neutral RCBO B Curve 6kA, 30mA Type A, Uni-Directional

Timeguard TX2420 20A 30mA Solid Neutral RCBO B Curve 6kA, 30mA Type A, Uni-Directional

SKU TX2420
Β£11.10 - Β£11.10
Β£11.10 inc VAT Β£9.25 exc VAT
Β£11.10 - Β£11.10
Β£11.10 inc VAT Β£9.25 exc VAT inc VAT Β£9.25 exc VAT
Datasheet

Estimated delivery time: Estimated delivery tomorrow*

Description

The Timeguard TX2420 20A 30mA Type A RCBO brings overload, short-circuit and residual-current protection together in one compact device. Designed for Timeguard TX series consumer units, it has a B-curve overcurrent characteristic, a 6kA breaking capacity and a single-module housing.

It is an option for electricians selecting protective devices for a compatible installation or replacing an existing RCBO where the circuit requires these exact characteristics.

Understand the current and protection ratings

The 20A rating relates to the circuit’s overcurrent protection. The 30mA rating is the rated residual operating current of the earth-leakage protection.

Type A describes the residual-current function’s response to sinusoidal AC and pulsating DC residual currents. B-curve describes a separate function: the breaker’s response to a high overcurrent.

Selecting the correct device involves checking the connected equipment, cable protection, installation conditions and consumer unit compatibility.

Solid neutral and unidirectional operation

This model has a solid neutral, which remains connected when the protected line pole opens. It should be distinguished from a switched-neutral RCBO when assessing the installation’s isolation requirements.

The TX2420 is also unidirectional. Supply and load connections must follow the manufacturer’s markings, and the device must not be selected for a circuit requiring bidirectional power flow.

Practical terminals and maintenance features

Top terminals accept conductors up to 10mmΒ², with a specified tightening torque of 1.2Nm. Bottom terminals accept up to 25mmΒ², with a tightening torque of 2.5Nm.

Terminal blanking plates help prevent incorrect cable or busbar insertion. A test button and contact position indicator are included, and the RCBO can be removed without removing the busbar once the assembly has been safely isolated.

Measuring 18mm wide Γ— 85mm high Γ— 73mm deep, it mounts onto a 35mm DIN rail. Timeguard provides a five-year guarantee, subject to its applicable terms.

Manufacturer compatibility is limited to Timeguard TX series consumer units.

Specification
  • Range - TX circuit protection
  • Product Code - TX2420
  • Product Type - RCBO
  • Rated Current - 20A
  • Rated Residual Operating Current - 30mA
  • Residual-Current Classification - Type A
  • Overcurrent Tripping Characteristic - B-curve
  • Short-Circuit Breaking Capacity - 6kA
  • Energy Limiting Class - Class 3, as listed in the manufacturer’s brochure
  • Pole Arrangement - Single pole with solid neutral
  • Neutral Switching - Unswitched
  • Directionality - Unidirectional
  • Protection Functions - Overload, short circuit and residual current / earth leakage
  • Rated Voltage - 240V AC, as listed in the datasheet
  • Rated Frequency - 50/60Hz, as listed in the datasheet
  • Module Width - 1 module
  • Mounting - 35mm DIN rail
  • Maximum Top Terminal Capacity - 10mmΒ²
  • Maximum Bottom Terminal Capacity - 25mmΒ²
  • Top Terminal Tightening Torque - 1.2Nm
  • Bottom Terminal Tightening Torque - 2.5Nm
  • Terminal Feature - Blanking plates to help prevent incorrect cable or busbar insertion
  • Contact Position Indicator - Included
  • Test Button - Included
  • Device Removal - Without removing the busbar
  • Electrical Endurance - 4,000 cycles
  • Mechanical Endurance - 10,000 cycles
  • Dielectric Strength - 2500V
  • Housing Material - PA6
  • Height - 85mm
  • Width - 18mm
  • Depth - 73mm
  • Standards Listed - IEC/BS EN 61009-1 and IEC/BS EN 61543
  • Compatibility - Timeguard TX series consumer units only
  • Manufacturer’s Guarantee - 5 years
FAQ's

What does the Timeguard TX2420 protect against?

It combines overload, short-circuit and residual-current protection for an individual circuit. Its ratings are 20A, 30mA, Type A, B-curve and 6kA.

How is an RCBO different from an MCB?

An MCB provides overload and short-circuit protection. An RCBO also incorporates residual-current protection to detect an imbalance between line and neutral currents.

What is the difference between 20A and 30mA?

20A is the rated circuit current. The 30mA figure is the rated residual operating current of the earth-leakage protection. They describe separate functions.

Does 30mA protection guarantee that an electric shock cannot occur?

No. It provides additional protection in appropriate installations but does not replace earthing, safe wiring, isolation or other protective measures.

What does Type A mean?

Type A residual-current protection responds to sinusoidal AC and pulsating DC residual currents. It should not be treated as equivalent to Type B residual-current protection.

Why is it described as Type A and B-curve?

Type A describes residual-current detection. B-curve describes the overcurrent operating characteristic. The classifications relate to different parts of the RCBO.

What does solid neutral mean?

The neutral remains connected when the protected line pole opens. A switched-neutral RCBO also disconnects the neutral.

Does it provide double-pole disconnection?

No. The manufacturer specifies a single protected pole with solid neutral. The installation’s isolation requirements must be assessed separately.

What does unidirectional mean?

The device is designed for power flowing from its designated supply side towards the load. Its supply and load markings must be followed.