Electromagnetic Residual Current Circuit Breaker

For mission-critical safety where reliability cannot depend on external power, choose the CDADA Electromagnetic Residual Current Circuit Breaker (RCCB). Engineered by Shanghai DADA Electric CO., LTD to IEC 61008-1 standards, this purely electromagnetic RCCB operates without any electronic circuitry or auxiliary voltage—making it immune to power fluctuations, surges, or neutral loss.

Available in 2P (1+N) and 4P (3+N) configurations with rated currents from 16A to 100A and sensitivities of 10mA, 30mA, or 100mA, it delivers fail-safe ground fault protection in polluted, high-humidity, or unstable grid environments.

With a 6kA conditional short-circuit rating, flame-retardant imported housing, and contact position indicator, the CDADA electromagnetic RCCB is trusted in industrial sites, rural infrastructure, and export panels where absolute mechanical reliability matters most.

Key Specifications

Type: Electromagnetic RCCB (No electronics, no auxiliary power required)

Standard: IEC 61008-1

Poles: 2P (1+N) or 4P (3+N)

Rated Current (In): 16A, 25A, 32A, 40A, 63A, 80A, 100A

Rated Voltage:

2P: 240V AC

4P: 240/415V AC

Sensitivity (I△n): 10mA, 30mA, 100mA

Non-Tripping Current: 0.5 × I△n

Trip Time at I△n: ≤ 0.1 second

Making & Breaking Capacity (I₄m):

500A (In ≤ 40A)

630A (In ≥ 63A)

Conditional Short-Circuit Current (Inc): 6kA

Impulse Withstand Voltage (Uimp): 6000V

Degree of Protection: IP20

Mounting: 35mm DIN rail, 45mm width

Terminals: Pin type, supports cables up to 35mm²

Housing: Flame-retardant, heat-resistant, impact-proof imported plastic

Operating Temp: Suitable for polluted/harsh environments

Visual Indicator: Contactor condition indicator (shows ON/OFF state)

Trip Mechanism: Pure electromagnetic release – works even with no voltage on line

Why Choose CDADA Electromagnetic RCCB?

★ Zero Dependency on Supply Voltage

Unlike electronic RCCBs, Electromagnetic Residual Current Circuit Breaker requires no auxiliary power—trips reliably even if neutral is broken, voltage collapses, or during blackouts.

★ Unmatched Reliability in Harsh Conditions

Special terminal design and high-grade materials ensure stable performance in dusty, humid, or corrosive environments—ideal for farms, tunnels, and outdoor cabinets.

★ Inherently Fail-Safe Design

No semiconductors = no aging, no software glitches, no EMI sensitivity. Just mechanical-magnetic physics—proven for decades.

★ Global Standard Compliance

Fully compliant with IEC 61008-1, suitable for international projects requiring robust, maintenance-free protection.

★ Clear Operational Feedback

Built-in contact position indicator allows instant visual confirmation—critical for safety audits and maintenance.

★ While respecting client confidentiality, we serve numerous distributors and OEM partners worldwide who supply to major projects and local markets.

★ Our sales and engineering teams strive to respond to all technical inquiries within 24 working hours.

Typical Applications

Rural Electrification: Areas with unstable or weak grids

Industrial Plants: High EMI environments (welders, motors)

Tunnels & Mines: Humid, polluted conditions

Backup Systems: Where neutral integrity cannot be guaranteed

Export Panels: For markets demanding pure electromagnetic reliability (e.g., parts of Africa, Middle East, Southeast Asia)

Frequently Asked Questions (FAQ)

Q1: What’s the difference between Type A and Type AC RCDs? A1:

● Type AC: Only detects smooth sinusoidal AC leakage (e.g., from heater faults).

● Type A: Detects AC + pulsating DC leakage (e.g., from phone chargers, LED drivers, washing machines). → Type A is required in modern installations with electronic loads. CDADA offers both types—confirm your application needs.

Q2: What’s the difference between electronic and electromagnetic RCCBs?

Feature	Electronic RCCB	Electromagnetic RCCB
Power Required	Yes (needs line voltage)	No – works at 0V
Neutral Dependency	Fails if neutral breaks	Still works without neutral
EMI Sensitivity	Can false-trip near motors/VFDs	Immune to EMI
Cost	Lower	Slightly higher
Use Case	Stable urban grids	Harsh, rural, or critical systems

Q3: Does this electromagnetic RCCB support 30mA personal protection?

A3: Yes—it’s available in 10mA, 30mA, and 100mA. The 30mA version meets IEC requirements for life-saving shock protection.

Q4: Can it be used in TT earthing systems?

A4: Absolutely. In fact, electromagnetic RCCBs are preferred in TT systems because they don’t rely on a stable neutral reference—which may be absent or high-impedance in TT setups.

Q5: Why choose CDADA for Electromagnetic Residual Current Circuit Breaker?

A5: CDADA delivers:

● True IEC 61008-1 compliant electromagnetic design

● No hidden electronics—pure magnetic operation

● High-grade flame-retardant housing for safety

● Proven reliability in polluted environments

● OEM support: bulk pricing, certification docs, fast sampling