Residential Electrical Protection Solutions
MCBs, RCCBs and RCBOs for residential distribution boards. Find the protection families for your project, compare VIOX series and prepare a clear product request.
Explore protection products
Start with the protection each circuit needs.
For panel builders, electrical contractors and distributors: organize the protection functions first, then confirm the exact devices against the supply system, loads and destination-market requirements.
Explore the protection families
Overload & short-circuit protection
VOB3-63 ミニチュア回路遮断器
Choose the current rating, tripping curve, pole configuration and breaking capacity for each circuit. An MCB does not provide residual-current protection.
残留電流保護
VKL11 漏電遮断器
Use with coordinated overcurrent protection. Select the residual-current type for the connected equipment; Type B and EV variants are not a default requirement for every home.
複合回路保護
VRL22 Type A/AC/ASi RCBO
Combine residual-current and overcurrent protection at the circuit level. Separating final circuits can limit disruption from a fault; continuity still depends on upstream coordination.
Protection options, not a wiring diagram or three devices to install in sequence. The supply system, loads and installation rules determine the final arrangement.
Other protection needs?
サージ保護装置 address transient overvoltages; they do not replace circuit breakers. Arc fault detection devices address specified arc-fault risks where required by the project and local rules. Main isolation and load-control devices must be selected separately for their duties.
Different loads. Different checks.
A lighting circuit and an inverter-driven appliance do not present the same selection questions. Use the equipment instructions alongside the circuit design.
- Lighting & socket outlets
- Check design load, conductor protection, switching inrush and the required residual-current protection.
- Kitchens, water heating & outdoor circuits
- Confirm dedicated-circuit needs, installation conditions, isolation and the applicable electric-shock protection measures.
- Air conditioning & heat pumps
- Check inverter characteristics and the equipment manufacturer’s specified RCD type. Do not select from appliance power alone.
- EV charging, rooftop PV & storage
- Confirm the equipment’s DC residual-current detection and protection requirements. Type B or EV-specific devices are candidates only where the system requires them; AC-side protection does not specify a PV or battery DC circuit.
Explore VIOX protection products
Start with the required protection function. Open a product for its ratings and documents, or compare the complete series before choosing a model.
MCB — Overload & short-circuit protection
Choose the current rating, tripping curve, pole configuration and breaking capacity for each circuit. An MCB does not provide residual-current protection.
RCCB — Residual-current protection
Use with coordinated overcurrent protection. Select the residual-current type for the connected equipment; Type B and EV variants are not a default requirement for every home.
RCBO — Combined circuit protection
Combine residual-current and overcurrent protection at the circuit level. Separating final circuits can limit disruption from a fault; continuity still depends on upstream coordination.
Bring the project details. Build a clearer product request.
Send an existing schedule or share the information below. If a value is not confirmed, flag it for review instead of selecting a rating by guesswork.
Match product standards, installation rules and market approvals to the exact model and application. Request the relevant model documents before order approval.
Review model-document support- Market & documents
- Destination country, project standard and required certificates or reports.
- Supply & installation
- Voltage, frequency, phases, earthing system and available short-circuit current.
- Circuits & protection
- Load schedule, conductor and installation details, RCD type, sensitivity and upstream protection.
- デバイスの構成
- Series, current, poles, trip curve, short-circuit rating and neutral-switching requirements.
- Order scope
- Quantities, board-space limits, branding and packaging requirements.
Planning a residential project or product range?
Share your circuit schedule or sourcing requirements with VIOX.