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:  

*I. Core Technical Parameters**  

1. **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.  

II. Typical Application Scenarios**  

1. **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.  

IV. Maintenance and Safety Tips**  

1. **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.  

V. 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.  

VI. 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.