NT50L-32 Earth Leakage Circuit Breaker | 2P 30A 30mA RCCB
NT50L-32 Earth Leakage Circuit Breaker | 2P 30A 30mA RCCB
The NT50L-32 type 2-pole earth leakage circuit breaker (RCCB/RCD) is a compact mini residual current protective device rated 30A 30mA for 230V single-phase AC circuits. It integrates three core protections: earth leakage electric shock protection, overload protection and short-circuit instantaneous breaking. Equipped with a dedicated test button for regular performance inspection, this DIN rail mount leakage switch complies with IEC61008 standards, widely used for household distribution boxes, small commercial shops and residential electrical safety protection.
The NT50L-32 type 2-pole earth leakage circuit breaker (RCCB/RCD) is a compact mini residual current protective device rated 30A 30mA for 230V single-phase AC circuits. It integrates three core protections: earth leakage electric shock protection, overload protection and short-circuit instantaneous breaking. Equipped with a dedicated test button for regular performance inspection, this DIN rail mount leakage switch complies with IEC61008 standards, widely used for household distribution boxes, small commercial shops and residential electrical safety protection.
1. Product Overview
The NT50L-32 NT series residual current circuit breaker is a compact 2P integrated leakage protection switch designed for single-phase 230V AC power supply systems. This model carries rated working current 30A with 30mA residual operating current, which is the standard safety threshold for preventing human electric shock accidents.
Different from ordinary miniature circuit breakers, this product adds high-sensitivity leakage induction coil on the basis of overload & short-circuit protection, realizing triple safety defense for household and light commercial circuits. Mini structure, panel fixed, flame-retardant insulated housing and mechanical test button for regular function verification, it meets IEC61008 international electrical safety standards, the ideal main power safety switch for apartments, villas, small retail stores and office branch circuits.
2. Core Product Features
1. Triple Integrated Circuit Protection
- Earth Leakage / Electric Shock Protection: 30mA sensitive trip, quickly cuts off power within 0.1s when equipment insulation leakage occurs to avoid fatal electric shock
- Overload Protection: Thermal bimetallic strip delays tripping under long-term overloaded current, preventing cable overheating and fire risks
- Short-Circuit Instantaneous Breaking: Magnetic trip mechanism cuts off circuit in milliseconds during short-circuit faults to protect wires and electrical appliances from burnout
2. Standard 2P Full Line Isolation Design
3. Dedicated Test Button for Regular Inspection
4. Compact NT Type Mini Modular Structure
5. High-Grade Flame-Retardant Insulation Housing
6. Clear Wiring Marking & Stable Conductive Parts
7. Authoritative International Standard Compliance
3. Working Conditions
- Ambient operating temperature: -5℃ ~ +40℃
- Protection grade: IP20, only installed inside enclosed indoor distribution boxes; not applicable for outdoor splash, humid or heavy dust open environments
- Surrounding atmosphere: Free of corrosive gas, flammable and conductive metal dust
- Altitude: Full rated protection performance below 2000 meters above sea level
- Vibration resistance: Tolerate light indoor vibration, avoid continuous strong mechanical impact
- Humidity: Relative humidity ≤85%, no condensation inside the breaker housing
4. Unified Technical Specifications
| Parameter | Specification for CCNT50L-32 |
|---|---|
| Model | NT50L-32 NT Type Earth Leakage Circuit Breaker |
| Poles | 2P (L + N live & neutral full isolation) |
| Rated Operational Voltage | AC 230V 50Hz |
| Rated Working Current In | 30A |
| Residual Operating Current IΔn | 30mA (human anti-shock safety grade) |
| Trip Time Under Leakage | ≤0.1s fast breaking |
| Protection Functions | Earth leakage shock protection + overload protection + short-circuit protection |
| Inspection Device | Built-in dedicated TEST test button |
| Mounting Method | Screw hole fixation |
| Housing Material | Flame-retardant anti-aging insulated engineering plastic |
| Compliance Standard | IEC61008 international residual current device standard |
| Applicable Load | Single-phase household lighting, socket, air conditioner, water heater and small commercial electrical loads |
5. Typical Applications
- Residential apartment & villa main incoming power safety switch
- Household distribution box socket loop dedicated leakage protection
- Small retail shops, beauty salons, office single-phase main circuit protection
- Water heater, air conditioner, washing machine high-leak-risk electrical branch circuits
- Small factory single-phase lighting and equipment power distribution cabinets
- Rental housing, student dormitory electrical safety control panels
6. Frequently Asked Questions (FAQ)
1. What does 30mA leakage current mean?
2. Can this breaker prevent overload and short circuit faults?
3. How to use the TEST test button?
4. Is reverse wiring allowed for LINE and LOAD terminals?
5. Can this leakage breaker be installed outdoors?
6. What load scenarios is this 30A model suitable for?
7. Technical documentation and support
Download the full datasheet for detailed specifications, wiring diagrams and trip coordination guides.
Please contact our technical team for custom configuration or OEM/ODM solutions for your project.
Request a quote with details about your project for volume pricing, lead times, and compliance certifications.
1. Product Overview
The NT50L-32 NT series residual current circuit breaker is a compact 2P integrated leakage protection switch designed for single-phase 230V AC power supply systems. This model carries rated working current 30A with 30mA residual operating current, which is the standard safety threshold for preventing human electric shock accidents.
Different from ordinary miniature circuit breakers, this product adds high-sensitivity leakage induction coil on the basis of overload & short-circuit protection, realizing triple safety defense for household and light commercial circuits. Mini structure, panel fixed, flame-retardant insulated housing and mechanical test button for regular function verification, it meets IEC61008 international electrical safety standards, the ideal main power safety switch for apartments, villas, small retail stores and office branch circuits.
2. Core Product Features
1. Triple Integrated Circuit Protection
- Earth Leakage / Electric Shock Protection: 30mA sensitive trip, quickly cuts off power within 0.1s when equipment insulation leakage occurs to avoid fatal electric shock
- Overload Protection: Thermal bimetallic strip delays tripping under long-term overloaded current, preventing cable overheating and fire risks
- Short-Circuit Instantaneous Breaking: Magnetic trip mechanism cuts off circuit in milliseconds during short-circuit faults to protect wires and electrical appliances from burnout
2. Standard 2P Full Line Isolation Design
3. Dedicated Test Button for Regular Inspection
4. Compact NT Type Mini Modular Structure
5. High-Grade Flame-Retardant Insulation Housing
6. Clear Wiring Marking & Stable Conductive Parts
7. Authoritative International Standard Compliance
3. Working Conditions
- Ambient operating temperature: -5℃ ~ +40℃
- Protection grade: IP20, only installed inside enclosed indoor distribution boxes; not applicable for outdoor splash, humid or heavy dust open environments
- Surrounding atmosphere: Free of corrosive gas, flammable and conductive metal dust
- Altitude: Full rated protection performance below 2000 meters above sea level
- Vibration resistance: Tolerate light indoor vibration, avoid continuous strong mechanical impact
- Humidity: Relative humidity ≤85%, no condensation inside the breaker housing
4. Unified Technical Specifications
| Parameter | Specification for CCNT50L-32 |
|---|---|
| Model | NT50L-32 NT Type Earth Leakage Circuit Breaker |
| Poles | 2P (L + N live & neutral full isolation) |
| Rated Operational Voltage | AC 230V 50Hz |
| Rated Working Current In | 30A |
| Residual Operating Current IΔn | 30mA (human anti-shock safety grade) |
| Trip Time Under Leakage | ≤0.1s fast breaking |
| Protection Functions | Earth leakage shock protection + overload protection + short-circuit protection |
| Inspection Device | Built-in dedicated TEST test button |
| Mounting Method | Screw hole fixation |
| Housing Material | Flame-retardant anti-aging insulated engineering plastic |
| Compliance Standard | IEC61008 international residual current device standard |
| Applicable Load | Single-phase household lighting, socket, air conditioner, water heater and small commercial electrical loads |
5. Typical Applications
- Residential apartment & villa main incoming power safety switch
- Household distribution box socket loop dedicated leakage protection
- Small retail shops, beauty salons, office single-phase main circuit protection
- Water heater, air conditioner, washing machine high-leak-risk electrical branch circuits
- Small factory single-phase lighting and equipment power distribution cabinets
- Rental housing, student dormitory electrical safety control panels
6. Frequently Asked Questions (FAQ)
1. What does 30mA leakage current mean?
2. Can this breaker prevent overload and short circuit faults?
3. How to use the TEST test button?
4. Is reverse wiring allowed for LINE and LOAD terminals?
5. Can this leakage breaker be installed outdoors?
6. What load scenarios is this 30A model suitable for?
7. Technical documentation and support
Download the full datasheet for detailed specifications, wiring diagrams and trip coordination guides.
Please contact our technical team for custom configuration or OEM/ODM solutions for your project.
Request a quote with details about your project for volume pricing, lead times, and compliance certifications.
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