Sensitivity

Application

Typical Use

10mA / 30mA

Personal Protection

Bathrooms, kitchens, outdoor sockets, medical locations - where human contact risk is highest

100mA

Fire Protection / Indirect Contact

General distribution circuits, sub-panels, areas with indirect contact risk

300mA

Equipment / Fire Protection

Main incoming protection, large installations, industrial equipment protection

Type

Detects

When to Use

Type AC

Pure AC only

Basic residential with standard resistive loads (heaters, incandescent lights). Most economical.

Type A (Recommended)

AC + Pulsating DC

Modern homes with electronic loads: washing machines, LED drivers, variable speed tools, computers. Recommended for new installations.

Type B

AC + All DC (incl. smooth)

Solar PV systems, EV charging, VFDs, medical equipment, DC-powered installations. Required for DC applications.

Parameter

Specification

Model Series

NL1

Device Type

RCCB/RCD (Pure Leakage Protection)

Rated Current

6A - 125A

Pole Configuration

Residual Sensitivity

30mA / 300mA

Detection Type

Type A (pulsating DC capable)

Trip Time

≤30ms at rated residual current

Standard

IEC 61008 (RCCB) / IEC 61009 (RCBO)

Chint NL1-63 Type A RCCB 1P+N 3P+N 25A 40A 63A 30mA 100mA 300mA 6kA 10kA CHNT English version CE and UKCA certified Type A RCD

1. General

1.1 Function

Control electric circuits.

Protect people against indirect contacts and additional protection against direct contacts.

Protect installations against fire hazard due to insulation faults.

Residual current circuit breakers are used in housing, tertiary sector and industry.

1.2 Selection

Detectable wave form

AC class

Tripping is ensured for slowly increasing sinusoidal AC residual currents.

A class

Tripping is ensured for sinusoidal AC residual currents and for pulsed DC residual currents, whether applied suddenly or increasing slowly.

– S, G/SI class

Tripping is ensured not only for sinusoidal AC residual currents but also for pulsed DC residual currents whether applied suddenly or increasing slowly. S, G/SI type with filters against spurious tripping caused by harmonics and transient surges. With the impact of 8/20us surge 3000A, this high immunity RCCB will still be in stable status.

Tripping sensitivity

10mA – precision instrument leakage protection and bathroom use.

30mA – additional protection against direct contact.

100mA – co-ordinated with the earth system according to the formula IΔn <50/R, to provide protection against indirect contacts; 300mA/500mA – protection against indirect contacts, as well as fire hazard.

Tripping time

Instantaneous – It ensures instantaneous tripping (without time-delay).

Short time delay – It ensures any tripping at least 10ms.

Selective – It ensures total discrimination with a nonselective RCD placed downstream.

Chint NL1-63 Type A RCDs
Item	Reference Numbers
NL1-63, 2 Pole, A Type, 25A, 30mA, 6kA	NL1-63-225/30-A
NL1-63, 2 Pole, A Type, 40A, 30mA, 6kA	NL1-63-240/30-A
NL1-63, 2 Pole, A Type, 63A, 30mA, 6kA	NL1-63-263/30-A
NL1-63, 2 Pole, A Type, 25A, 100mA, 6kA	NL1-63-225/100-A
NL1-63, 2 Pole, A Type, 40A, 100mA, 6kA	NL1-63-240/100-A
NL1-63, 2 Pole, A Type, 63A, 100mA, 6kA	NL1-63-263/100-A
NL1-63, 2 Pole, A Type, 25A, 300mA, 6kA	NL1-63-225/300-A
NL1-63, 2 Pole, A Type, 40A, 300mA, 6kA	NL1-63-240/300-A
NL1-63, 2 Pole, A Type, 63A, 300mA, 6kA	NL1-63-263/300-A
NL1-63, 4 Pole, A Type, 25A, 30mA, 6kA	NL1-63-425/30-A
NL1-63, 4 Pole, A Type, 40A, 30mA, 6kA	NL1-63-440/30-A
NL1-63, 4 Pole, A Type, 63A, 30mA, 6kA	NL1-63-463/30-A
NL1-63, 4 Pole, A Type, 25A, 100mA, 6kA	NL1-63-425/100-A
NL1-63, 4 Pole, A Type, 40A, 100mA, 6kA	NL1-63-440/100-A
NL1-63, 4 Pole, A Type, 63A, 100mA, 6kA	NL1-63-463/100-A
NL1-63, 4 Pole, A Type, 25A, 300mA, 6kA	NL1-63-425/300-A
NL1-63, 4 Pole, A Type, 40A, 300mA, 6kA	NL1-63-440/300-A
NL1-63, 4 Pole, A Type, 63A, 300mA, 6kA	NL1-63-463/300-A
NL1-63, 2 Pole, A Type, 25A, 30mA, 10kA	NL1-2-25-30A10
NL1-63, 2 Pole, A Type, 40A, 30mA, 10kA	NL1-2-40-30A10
NL1-63, 2 Pole, A Type, 63A, 30mA, 10kA	NL1-2-63-30A10
NL1-63, 2 Pole, A Type, 25A, 100mA, 10kA	NL1-2-25-100A10
NL1-63, 2 Pole, A Type, 40A, 100mA, 10kA	NL1-2-40-100A10
NL1-63, 2 Pole, A Type, 63A, 100mA, 10kA	NL1-2-63-100A10
NL1-63, 2 Pole, A Type, 25A, 300mA, 10kA	NL1-2-25-300A10
NL1-63, 2 Pole, A Type, 40A, 300mA, 10kA	NL1-2-40-300A10
NL1-63, 2 Pole, A Type, 63A, 300mA, 10kA	NL1-2-63-300A10
NL1-63, 4 Pole, A Type, 25A, 30mA, 10kA	NL1-4-25-30A10
NL1-63, 4 Pole, A Type, 40A, 30mA, 10kA	NL1-4-40-30A10
NL1-63, 4 Pole, A Type, 63A, 30mA, 10kA	NL1-4-63-30A10
NL1-63, 4 Pole, A Type, 25A, 100mA, 10kA	NL1-4-25-100A10
NL1-63, 4 Pole, A Type, 40A, 100mA, 10kA	NL1-4-40-100A10
NL1-63, 4 Pole, A Type, 63A, 100mA, 10kA	NL1-4-63-100A10
NL1-63, 4 Pole, A Type, 25A, 300mA, 10kA	NL1-4-25-300A10
NL1-63, 4 Pole, A Type, 40A, 300mA, 10kA	NL1-4-40-300A10
NL1-63, 4 Pole, A Type, 63A, 300mA, 10kA	NL1-4-63-300A10

Weight

2 kg

Dimensions

25 × 25 × 25 cm

Rated Current

63A, 25A, 40A

Rated Voltage

240V/415V

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CHINT NL1-63 Type A RCCB 1P+N/3P+N 30mA-300mA CE UKCA

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CHINT NL1-63 Type A RCCB 1P+N/3P+N 30mA-300mA CE UKCA

Name: CHINT NL1-63 Type A RCCB 1P+N/3P+N 30mA-300mA CE UKCA
Brand: CHINT
SKU: 1600723415375
Availability: InStock

Rated Frequency:50/60hz
Type:Residual Current
Brand Name:Chint
Place of Origin:China
Model Number:NL1-63
Poles Number:2

SKU: 1600723415375 Category: Others

Where to Use NL1?

The CHINT NL1-63 Type A RCCB 1P+N/3P+N 30mA-300mA CE UKCA is a Residual Current Circuit Breaker (RCCB/RCD) designed for leakage protection and personal safety in residential electrical panels, commercial buildings, wet locations (bathrooms, kitchens), outdoor power supplies, and anywhere personal protection is critical. This RCCB provides dedicated leakage current detection with high sensitivity (30mA / 300mA), automatically disconnecting power when dangerous leakage currents are detected, preventing electric shock hazards.

Why Choose NL1 Series?

Personal Safety Protection - Detects dangerous leakage currents before they cause electric shock
Type A (pulsating DC capable) - Detects both AC and pulsating DC residual currents (modern appliances, LED drivers)
High Sensitivity Options - 30mA / 300mA trip settings for different protection levels
Fast Response Time - Trips within 30ms when leakage is detected, well below dangerous exposure times
IEC 61008/61009 Certified - Complies with international residual current device standards
Chint Original Quality - CE, SAA, CCC approved with 2-year warranty

Sensitivity (Trip Current) Selection Guide

Choose the right sensitivity level for your application:

Sensitivity	Application	Typical Use
10mA / 30mA	Personal Protection	Bathrooms, kitchens, outdoor sockets, medical locations - where human contact risk is highest
100mA	Fire Protection / Indirect Contact	General distribution circuits, sub-panels, areas with indirect contact risk
300mA	Equipment / Fire Protection	Main incoming protection, large installations, industrial equipment protection

Type AC vs Type A vs Type B - Which One?

Type	Detects	When to Use
Type AC	Pure AC only	Basic residential with standard resistive loads (heaters, incandescent lights). Most economical.
Type A (Recommended)	AC + Pulsating DC	Modern homes with electronic loads: washing machines, LED drivers, variable speed tools, computers. Recommended for new installations.
Type B	AC + All DC (incl. smooth)	Solar PV systems, EV charging, VFDs, medical equipment, DC-powered installations. Required for DC applications.

Technical Specifications

Parameter	Specification
Model Series	NL1
Device Type	RCCB/RCD (Pure Leakage Protection)
Rated Current	6A - 125A
Pole Configuration	3P
Residual Sensitivity	30mA / 300mA
Detection Type	Type A (pulsating DC capable)
Trip Time	≤30ms at rated residual current
Standard	IEC 61008 (RCCB) / IEC 61009 (RCBO)

Frequently Asked Questions

Q: What is the difference between RCCB and RCBO?

A: RCCB (Residual Current Circuit Breaker) provides only leakage protection - it detects earth faults and disconnects power but doesn't protect against overloads or short circuits. RCBO (Residual Current Breaker with Overcurrent protection) combines RCD + MCB in one device - it protects against leakage AND overcurrent/overload/short-circuit. RCBO saves space in distribution boards and provides complete protection.

Q: 30mA vs 300mA - which sensitivity should I choose?

A: 30mA (or 10mA) is required for personal protection in locations with high shock risk (bathrooms, kitchens, outdoor power, medical facilities). This level protects humans from fatal electric shock. 300mA is used for equipment and fire protection on main incoming circuits - it prevents fires from insulation faults but won't protect against direct contact. Never use 300mA for socket outlet circuits where people may touch appliances.

Q: Do I need Type A or is Type AC sufficient?

A: For new installations, always choose Type A. Modern appliances (washing machines, LED lights, computers, variable speed tools) generate pulsating DC leakage currents that Type AC cannot detect. Type A provides better safety and is now required by updated electrical codes in many countries. Type AC is only suitable for basic installations with purely resistive loads (heaters, incandescent bulbs) and should be considered legacy technology.

Need Help Selecting RCCB/RCBO? Our electrical engineers can advise on the right sensitivity, type, and rating for your installation. Contact us at sales@sntelec.com or WhatsApp +86-18019187010.

Description
Additional information

Description

Chint NL1-63 Type A RCDs
Item	Reference Numbers
NL1-63, 2 Pole, A Type, 25A, 30mA, 6kA	NL1-63-225/30-A
NL1-63, 2 Pole, A Type, 40A, 30mA, 6kA	NL1-63-240/30-A
NL1-63, 2 Pole, A Type, 63A, 30mA, 6kA	NL1-63-263/30-A
NL1-63, 2 Pole, A Type, 25A, 100mA, 6kA	NL1-63-225/100-A
NL1-63, 2 Pole, A Type, 40A, 100mA, 6kA	NL1-63-240/100-A
NL1-63, 2 Pole, A Type, 63A, 100mA, 6kA	NL1-63-263/100-A
NL1-63, 2 Pole, A Type, 25A, 300mA, 6kA	NL1-63-225/300-A
NL1-63, 2 Pole, A Type, 40A, 300mA, 6kA	NL1-63-240/300-A
NL1-63, 2 Pole, A Type, 63A, 300mA, 6kA	NL1-63-263/300-A
NL1-63, 4 Pole, A Type, 25A, 30mA, 6kA	NL1-63-425/30-A
NL1-63, 4 Pole, A Type, 40A, 30mA, 6kA	NL1-63-440/30-A
NL1-63, 4 Pole, A Type, 63A, 30mA, 6kA	NL1-63-463/30-A
NL1-63, 4 Pole, A Type, 25A, 100mA, 6kA	NL1-63-425/100-A
NL1-63, 4 Pole, A Type, 40A, 100mA, 6kA	NL1-63-440/100-A
NL1-63, 4 Pole, A Type, 63A, 100mA, 6kA	NL1-63-463/100-A
NL1-63, 4 Pole, A Type, 25A, 300mA, 6kA	NL1-63-425/300-A
NL1-63, 4 Pole, A Type, 40A, 300mA, 6kA	NL1-63-440/300-A
NL1-63, 4 Pole, A Type, 63A, 300mA, 6kA	NL1-63-463/300-A
NL1-63, 2 Pole, A Type, 25A, 30mA, 10kA	NL1-2-25-30A10
NL1-63, 2 Pole, A Type, 40A, 30mA, 10kA	NL1-2-40-30A10
NL1-63, 2 Pole, A Type, 63A, 30mA, 10kA	NL1-2-63-30A10
NL1-63, 2 Pole, A Type, 25A, 100mA, 10kA	NL1-2-25-100A10
NL1-63, 2 Pole, A Type, 40A, 100mA, 10kA	NL1-2-40-100A10
NL1-63, 2 Pole, A Type, 63A, 100mA, 10kA	NL1-2-63-100A10
NL1-63, 2 Pole, A Type, 25A, 300mA, 10kA	NL1-2-25-300A10
NL1-63, 2 Pole, A Type, 40A, 300mA, 10kA	NL1-2-40-300A10
NL1-63, 2 Pole, A Type, 63A, 300mA, 10kA	NL1-2-63-300A10
NL1-63, 4 Pole, A Type, 25A, 30mA, 10kA	NL1-4-25-30A10
NL1-63, 4 Pole, A Type, 40A, 30mA, 10kA	NL1-4-40-30A10
NL1-63, 4 Pole, A Type, 63A, 30mA, 10kA	NL1-4-63-30A10
NL1-63, 4 Pole, A Type, 25A, 100mA, 10kA	NL1-4-25-100A10
NL1-63, 4 Pole, A Type, 40A, 100mA, 10kA	NL1-4-40-100A10
NL1-63, 4 Pole, A Type, 63A, 100mA, 10kA	NL1-4-63-100A10
NL1-63, 4 Pole, A Type, 25A, 300mA, 10kA	NL1-4-25-300A10
NL1-63, 4 Pole, A Type, 40A, 300mA, 10kA	NL1-4-40-300A10
NL1-63, 4 Pole, A Type, 63A, 300mA, 10kA	NL1-4-63-300A10