CHINT RCCB NBHLE-40Y-1PC32

CHINT NBHLE-40Y-1PC32 is a 1P+N two-pole residual current circuit breaker (RCCB) specially designed for household and small-to-medium engineering applications. It integrates overload, short-circuit, and leakage protection functions, suitable for AC 50Hz/60Hz circuits with a rated voltage of 230V. Below is its core information and application guidelines:

1. Core Technical Parameters
2. Rated Current and Trip Characteristics

Rated current: 32A, suitable for conventional loads such as lighting, sockets, and small air conditioners, supporting up to approximately 7kW single-phase devices (e.g., instantaneous water heaters).

Default Type C trip characteristic (instantaneous trip at 5-10 times rated current), ideal for resistive loads (e.g., lamps, electric heaters); for inductive loads like motors, Type D (instantaneous trip at 10-14 times) is available.

2. Leakage Protection and Breaking Capacity

30mA leakage action current, rapidly cutting off faulty circuits within 0.1 seconds, compliant with IEC 61009-1 and GB/T 16917.1 standards to prevent electric shock and fire risks.

Breaking capacity: 6kA, capable of handling common household short-circuit currents (typically 2-4kA) to ensure safe power disconnection.

3. Electrical Performance and Certifications

– Rated voltage: 230V, operating temperature range: -5°C to +70°C, IP20 protection grade, resistant to moisture and dust.

– Certified by CCC and compliant with CE standards, ensuring reliable quality.

1. Typical Application Scenarios
2. Household Power Distribution Systems

Branch Circuit Protection: Socket circuits in humid areas like kitchens and bathrooms to prevent safety accidents from leakage. For example, electric water heaters (3-8kW) can directly use a 32A circuit breaker with 30mA leakage protection for dual-layer safety.

Whole-House Leakage Protection: If the distribution box lacks a main RCCB, NBHLE-40Y-1PC32 can serve as the main switch to monitor leakage across all circuits.

2. Commercial and Light Industrial Use

Small Office Equipment: Centralized power supply circuits for printers, projectors, water dispensers, etc., to avoid overload and leakage risks.

Store Lighting Systems: LED strips and display cabinet circuits in clothing stores, cafes, etc., providing stable protection.

3. New Energy Equipment Adaptation

AC Charging Pile Protection: A 7kW charging pile (32A) can directly use this circuit breaker as the main switch, paired with NXB series circuit breakers for hierarchical control.

PV Inverter Branch: Protection for the AC side of small household PV systems to prevent damage from backflow current.

III. Installation and Selection Recommendations

1. Installation Specifications

Rail Mounting: Compatible with TH35-7.5mm standard rails, wiring terminals support 2.5-10mm² conductors, and vertical installation is required for optimal heat dissipation.

Environmental Requirements: Avoid installation in high-temperature (>70°C), high-humidity, or flammable environments; distribution boxes must have reserved heat dissipation space (≥30cm from the wall).

2. Selection Logic

Load Matching: Equipment total power (W) ÷ voltage (230V) = current (A). The circuit breaker’s rated current should be ≥1.2 times the calculated value. For example, a 6kW load corresponds to 26.1A, making a 32A circuit breaker compliant.

Leakage Protection Hierarchy: If the main switch already has an RCCB, use ordinary circuit breakers (e.g., NXB63-2P/32A) for branches; if not, prioritize NBHLE series for whole-house protection.

3. Accessory Expansion

Auxiliary Functions: Can be paired with AX-X1 auxiliary contacts (indicate on/off status), AL-X1 alarm contacts (trigger signals during faults), or shunt trip coils (remote tripping control).

System Compatibility: Compatible with NXB series circuit breakers, rail sockets, and surge protectors (e.g., NXU) to build modular power distribution systems.

1. Maintenance and Safety Tips
2. Regular Inspections

Monthly Testing: Press the test button (TEST) to verify the leakage protection function. Replace immediately if it fails to trip.

Annual Check: Use an infrared thermometer to detect contact temperatures (≤60°C) and prevent increased contact resistance due to oxidation.

2. Fault Troubleshooting

Frequent Tripping: If overload or short circuit is ruled out, aging insulation may be the cause, requiring professional electrical inspection.

Leakage Indicator Protrusion: Indicates a past leakage fault; identify and fix the cause before resetting.

1. Pricing and Purchase Channels

Market Price: Reference price per unit is approximately 150-200 CNY (subject to local dealers).

Purchase Advice: Procure through CHINT’s official channels (e.g., Tmall flagship store, authorized dealers) to ensure product quality and after-sales service.

1. Typical Configuration Schemes

With high reliability and flexible adaptability, CHINT NBHLE-40Y-1PC32 is the ideal choice for leakage protection in household and small-to-medium engineering projects. Users can select trip characteristics based on load types and strictly follow installation guidelines to ensure electrical safety.