​ ABB and Chint C40 Residual Current Devices (RCDs) for Charging Piles

When selecting ABB and Chint C40 residual current devices (RCDs) for charging piles, the following key information should be prioritized:

1. Core Parameter and Function Comparison
2. ABB GSH202-C40

Rated Current: 40A, suitable for the conventional current requirements of charging piles.

Residual Current Trip Level: 30mA (Type C tripping characteristic), compliant with IEC 60898-1 standards. Suitable for conventional power distribution protection but has weak response to DC leakage.

Breaking Capacity: 6kA, capable of quickly interrupting short-circuit currents.

Pole Configuration: 2P (double-pole), disconnects both live and neutral wires for comprehensive protection.

Voltage Range: 230/400V (50/60Hz), compatible with the US 240V system, but requires confirmation of UL certification.

Protection Rating: IP20 (for indoor use only), unsuitable for outdoor charging pile environments.

2. Chint NXBLE-63-3P+N-C40

Rated Current: 40A, suitable for charging pile requirements.

Residual Current Trip Level: 30mA (Type C tripping characteristic), compliant with GB/T16917.1 standards. Also has insufficient response to DC leakage.

Breaking Capacity: 6kA, meeting short-circuit protection needs.

Pole Configuration: 3P+N, suitable for three-phase or single-phase systems but larger in size.

Voltage Range: 230/400V (50Hz), requires step-down adaptation for the US 120V/240V system.

Protection Rating: IP66 (for some models), suitable for outdoor installation.

1. Certification and Compliance

ABB

– Compliant with IEC standards but not explicitly UL-certified. Confirm the suitability of the model for the US market (e.g., whether GSH202-C40 is a UL-certified version).

– Some product series are ATEX-certified, suitable for special environments.

Chint

– Passes China’s CCC certification, with some products exported to Europe and the US, but the UL certification status of the C40 model is unconfirmed.

– Models with a protection rating of IP66 (e.g., CPS SCA40KTL) are suitable for outdoor charging piles.

III. Applicability Analysis for Charging Piles

1. Voltage and Frequency Adaptation

US Scenarios

– ABB GSH202-C40 supports 60Hz, and its 230V voltage can be compatible with the US 240V system (confirm derating use).

– Chint C40 requires a step-down transformer for US voltage adaptation, which may affect performance stability.

2. Trip Type and Leakage Protection

Charging Pile Requirements

– According to IEC 60364-7-722, Type A or B RCDs must be selected to detect AC/DC mixed leakage.

– Both ABB and Chint C40 are Type C, suitable only for AC leakage protection and may fail to meet the DC leakage protection requirements of charging piles.

3. Environmental Adaptability

Outdoor Installation

– ABB GSH202-C40 has a protection rating of IP20, suitable only for indoor use; select ABB outdoor models (e.g., IP54 rating).

– Some Chint C40 models (e.g., CPS SCA40KTL) have an IP66 rating and can be directly used outdoors.

1. Price and After-Sales Service

Price Comparison

– The unit price of ABB GSH202-C40 is approximately [contact via Whatsapp: 86-13811255435] RMB, with a significant price difference.

– Chint offers higher cost-effectiveness but requires balancing certification and protection performance.

After-Sales Service

– ABB provides more comprehensive global support, while Chint relies on local distributors or importers.

1. Precautions and Recommendations
2. Prioritize Compliant Models

US Market

– Recommend ABB GSH202-C40 (confirm UL certification) or Chint NXBLE-63-3P+N-C40 (confirm UL certification).

– If the charging pile includes DC components, upgrade to Type A or B RCDs (e.g., ABB T200 series or Chint NBE7LE-A type).

2. Installation Standards

– Install by licensed electricians in accordance with NEC standards to ensure reliable grounding.

– For outdoor installations, select models with an IP54 or higher protection rating to prevent water ingress.

3. Compatibility Testing

– Test the actual response of the RCD to the charging pile before installation, especially in DC leakage scenarios.

1. Summary

ABB GSH202-C40: Stable performance, suitable for indoor or compatible environments, but requires confirmation of UL certification and protection rating.

Chint NXBLE-63-3P+N-C40: High cost-effectiveness, with IP66 models suitable for outdoor use, but requires voltage adaptation and UL certification.

Recommended Solutions:

Indoor Charging Piles: Choose ABB GSH202-C40 (confirm UL certification).

Outdoor Charging Piles: Choose Chint IP66-rated C40 models (e.g., CPS SCA40KTL) with a step-down transformer.

DC Charging Piles: Prioritize Type A or B RCDs (e.g., ABB T200 series).

Contact the manufacturer’s technical support to customize solutions based on specific charging pile parameters (e.g., DC components, voltage fluctuations) to ensure safety and compliance.