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Timeguard TX2425C 25A 30mA Type A C-Curve Solid Neutral RCBO

Timeguard TX2425C 25A 30mA Type A C-Curve Solid Neutral RCBO

SKU TX2425C
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

Estimated delivery time: Estimated delivery tomorrow*

Description

The Timeguard TX2425C 25A 30mA Type A RCBO combines overload, short-circuit and residual-current protection in one compact device. Designed for Timeguard TX series consumer units, it has a C-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 25A C-curve protection.

Understand Type A and C-curve

These classifications describe different functions. Type A residual-current protection responds to sinusoidal AC and pulsating DC residual currents. C-curve describes the overcurrent operating characteristic.

Compared with an equivalent B-curve device, C-curve has a higher instantaneous magnetic operating threshold. This can accommodate brief starting currents where the equipment and circuit design support its use. The rated circuit current remains 25A.

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 checking the installation’s isolation requirements.

The device is also unidirectional. Supply and load connections must follow the manufacturer’s markings, and it 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 - TX2425C
  • Product Type - RCBO
  • Rated Current - 25A
  • Rated Residual Operating Current - 30mA
  • Residual-Current Classification - Type A
  • Overcurrent Tripping Characteristic - C-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 TX2425C protect against?

It combines overload, short-circuit and residual-current protection for an individual circuit. Its ratings are 25A, 30mA, Type A, C-curve and 6kA.

How does an RCBO differ 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 25A and 30mA?

25A is the rated circuit current. The 30mA figure is the rated residual operating current of the earth-leakage protection. They describe separate functions.

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

Type A describes the residual-current detection characteristic. C-curve describes the overcurrent operating characteristic. This is a Type A RCBO with a C-curve overcurrent function.

What residual currents can Type A protection detect?

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

How does TX2425C differ from TX2425?

TX2425C is C-curve; TX2425 is B-curve. Both are listed as 25A, 30mA, Type A, solid-neutral unidirectional RCBOs.

Why might an electrician specify C-curve?

Its higher instantaneous magnetic operating threshold can accommodate brief starting currents where the equipment and circuit design support C-curve protection.

Can it replace a B-curve RCBO to prevent tripping?

Only after the cause of the tripping and the circuit design have been checked. Changing the characteristic can affect fault-disconnection requirements and will not correct overloads or wiring defects.

Does C-curve increase the permitted continuous load?

No. The rated circuit current remains 25A. The C-curve characteristic relates to the overcurrent response.

Can I replace a lower-rated RCBO with this 25A model?

Only after an electrician verifies that the complete circuit is suitable for 25A protection. Increasing the rating without checking the cable and installation can leave the circuit inadequately protected.

What does solid neutral mean?

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

Can it detect earth leakage even though the neutral is unswitched?

Yes. Solid neutral describes the switching arrangement. The device still incorporates the specified 30mA residual-current protection.

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.

Can the supply and load connections be reversed?

No. It must be connected in accordance with the manufacturer’s markings. Physical connection in the opposite direction does not establish safe operation.