RCB S24 Class A

S24 Class A RCDs: S24 residual current protection for modern electronic and rectified loads.

Class: A class for AC and pulsating DC leakage.
Series: S24 modular design for DIN boards.
Formats: 2P and 4P versions.
Sensitivity: 30mA and 300mA depending on protection level.

Documentation

Videos

Ref. S24DA2P4030

Residual current circuit breaker 2P 40A 30mA Class A

Ref. S24DA4P4030

RCCB 4P 40A 30 mA Class A

Ref. S24DA4P6330

RCCB 4P 63A 30 mA Class A

Ref. S24DA2P2530

Residual current circuit breaker 2P 25A 30mA Class A

Ref. S24DA2P6330

Residual current circuit breaker 2P 63A 30mA Class A

Ref. S24DA4P2530

Residual current circuit breaker 4P 25A 30mA Class A

S24 Type A RCDs: references, poles and sensitivity

Solera S24 Type A RCDs detect sinusoidal AC and pulsating DC residual currents. They are considered for circuits with electronic or rectified loads capable of producing those waveforms. The references published in this category are 2P and 4P devices rated 25, 40 and 63 A, with a sensitivity of 30 mA.

Published Type A references

Comparison of visible references; all rows have a rated residual operating current IΔn of 30 mA
Reference	Commercial designation	Rated current	Sensitivity
S24DA2P2530	2P	25 A	30 mA
S24DA2P4030	2P	40 A	30 mA
S24DA2P6330	2P	63 A	30 mA
S24DA4P2530	4P	25 A	30 mA
S24DA4P4030	4P	40 A	30 mA
S24DA4P6330	4P	63 A	30 mA

Selection for electronic loads

Select rated current to suit the circuit and its coordination with overcurrent protection. Then check poles, voltage and space. For example, S24DA4P4030 is rated 40 A, 30 mA and 400 V AC and occupies four modules; these details must not automatically be applied to the two-pole versions.

Type A does not imply smooth DC detection, high immunity or automatic resetting. For power electronic equipment, check possible residual currents and the equipment documentation before selecting Type A, Type B or a high-immunity version.

Frequently asked questions

What does Type A add compared with Type AC?

In addition to sinusoidal AC residual currents, Type A detects pulsating DC residual currents. This does not mean protection for every DC waveform; where smooth DC may occur, assess the specific requirements.

How do S24DA2P4030 and S24DA4P4030 differ?

Both are published with 40 A and 30 mA ratings. The former is designated 2P and the latter 4P. Selection must follow the network arrangement, neutral treatment, voltage and space, not simply their shared current and sensitivity.

Is an S24 Type A device automatically a high-immunity device?

No. The Type A and S24 high-immunity categories are distinct. Where increased immunity to disturbances is required, check that the reference expressly specifies it. Type A alone does not imply automatic resetting either.