EPS RCBO 20A 1P+N – Common EPS RCBO with ~20 A current rating and combined leakage + overcurrent protection — ideal for protecting lighting, socket circuits, or general household branches.
EPS RCBO HNA3LE 32 1P+N – EPS variant (e.g., 20 A/25 A, 10 mA sensitivity) good for personal shock protection circuits.
DPNL 1P+N RCBO C40A – Higher-current RCBO (~40 A) with class A / AC leakage detection and overload protection, suitable for heavier branch circuits.
EPNL DPNL 1P+N RCBO – Basic 1 P + N leakage-protected breaker at value price point.
18 /mm A RCBO RCD 1P+N – Slim 18 mm module size variant with ~30 mA earth-leakage sensitivity and overload protection.
RCBO MCB DPNL 1P+N DZ30LE/DZ40LE – Value RCBO combining MCB + earth leakage at low price.
1P+N RCBO C Type (10 100 /A) – Wider 10 A – 100 A range (Type C) for both residential & light commercial use.
EPS RCBO 2P (similar) – Related EPS RCBO 2-pole version (1 P + N is also 2-pole in function).
An RCBO (Residual Current Circuit Breaker with Overcurrent protection) combines the functions of a residual current device (RCD/RCCB) and a miniature circuit breaker (MCB) in one unit. It protects a circuit from:
Overload (sustained high current),
Short circuit (sudden fault current), and
Earth-leakage / residual current (difference between phase + neutral > threshold).
This is typically used for individual branch circuits (lighting, outlets, water heaters) where both earth-leakage and overcurrent protection are needed in one device, saving space and increasing safety.
Number of Poles: 1P + N (protects phase and neutral together).
Rated Voltage: ~230/240 V AC (single-phase circuits).
Rated Current (In): Common options like 6 A, 10 A, 16 A, 20 A, 25 A, 32 A, 40 A (varies by model).
Leakage Sensitivity (IΔn): Typically 30 mA (for human shock protection), also 100 mA/300 mA variants available.
Trip Curves: B or C type (higher inrush tolerance on C types).
Breaking Capacity: Usually around 6 kA–10 kA depending on model.
Frequency: 50/60 Hz.
Standards: Complies with IEC 61009-1 (residual current operated circuit breaker with overcurrent protection).
Mounting: 35 mm DIN-rail inside distribution boards.
Manual Test Button: Many have a “T” test button to verify residual current trip.
Terminal Type: Screw/clamp terminals for secure wiring.
When the circuit is normal, current equally flows in phase and neutral. If:
The leakage current (difference) exceeds the rated sensitivity (e.g., 30 mA), the device trips to prevent shock/fire risk.
Or the current exceeds the rated current (overload/short), the breaker opens to protect wiring.\
Protecting a single branch circuit with combined earth leakage and overcurrent protection
Power points and socket circuits
Bathroom/kitchen circuits where leakage protection is mandated
Individual appliances like water heaters, motors, pumps
Energy safety in residential, commercial, or light-industrial sett
Malaysia
