HO232 / HO234 10kA Type A Electromagnetic RCBO
Residual-current, overload and short-circuit protection for engineering-grade distribution boards
Product Positioning
For panel builders, installers and engineering importers who need a Chinese RCBO solution that can be selected, installed,documented and traced in real projects.
- Electro-magnetic residual-current mechanism; no auxiliary electronic supply required for the RCD function.
- Type A residual-current characteristic for AC and pulsating DC residual currents where Type A is confirmed by project design.
- Integrated residual-current, overload and short-circuit protection in one compact RCBO.
- 10kA rated short-circuit capacity for higher project safety margin.
- Line/load reversible wiring design; suitable for standard DIN-rail distribution boards.
Strategic delivery principle: no application confirmation, no quotation; no batch evidence, no shipment; no boundary note, no universal promise.
Application Locking Gate - before quotation or project use
| Step | Check item | Required confirmation |
| 1 | Country / market | Netherlands, Germany, France, UK, Nordic，countries or other market; local rules may differ. |
| 2 | Project application | Residential board, EV charger, heat pump, PV, VFD/inverter, UPS, storage, machinery or other load. |
| 3 | Electrical system | Rated voltage, number of poles, earthing system, prospective short-circuit current and upstream/downstream protection. |
| 4 | RCD type decision | Confirm AC/A/F/B/B+ requirement; Type A is not a universal substitute for Type B or 6mA DC detection. |
| 5 | Documentation need | Certificate coverage, test report mapping, wiring diagram, torque sheet, dimension drawing and batch evidence. |
1. Model Selection and Core Ratings
Main model coverage
| Model | Pole | RCD type | Rated current | I_Dn | Trip curve | Width |
|---|---|---|---|---|---|---|
| HO232 | 1P+N | Type A | 6, 10, 16, 20, 25, 32, 40, 50, 63A* | 30 / 100 / 300mA | B / C / D | 2 modules, 36mm |
| HO234 | 3P+N | Type A | 6, 10, 16, 20, 25, 32, 40A | 30 / 100 / 300mA | B / C / D | 4 modules, 72mm |
Technical data
| Item | Data |
|---|---|
| Product type | Residual Current Circuit Breaker with Overcurrent Protection (RCBO) |
| Residual-current operating principle | Electro-magnetic type |
| Residual-current characteristic | Type A |
| Rated short-circuit capacity | 10kA / 10000A |
| Rated voltage | 240/415V AC |
| Rated frequency | 50/60Hz |
| Tripping duration | Instantaneous 0.1s |
| Rated impulse withstand voltage | 4kV (1.2/50us) |
| Electrical endurance | >= 4,000 operating cycles |
| Mechanical endurance | >= 1,000 operating cycles |
| Connection terminal | Pillar terminal with clamp; finger and hand touch safe |
| Terminal capacity | 1-25mm² |
| Recommended terminal torque | 2.0N·m; do not exceed 2.5N·m |
| Compatible busbar thickness | 0.8-2mm |
| Degree of protection | Switch: IP20; built-in product: IP40 |
| Operating temperature | -25°C to +40°C |
| Storage / transport temperature | -35°C to +60°C |
| Mounting | DIN rail mounting; 3-position DIN rail dip for removal from existing busbar system |
| Standard reference | IEC/EN 61009-1 product family documentation, subject to exact certificate coverage |
Do not describe this product as suitable for all applications. Application, RCD type and documentation scope must be confirmed before quotation.
2. Wiring, Dimensions and Anti-callback Notes
HO232 – 1P+N wiring convention
- Neutral pole on the right side.
- Top terminals: LINE L1 / N; bottom terminals: LOAD L1 / N.
- Line/load reversible design; confirm project wiring before energizing.
- After wiring, press TEST button and perform functional checking
HO234 – 3P+N wiring convention
- Neutral pole on the far right side.
- Visual front order from left to right: L3 / L2 / L1 / N.
- Right-to-left phase sequence: L1 / L2 / L3.
- Top terminals: LINE; bottom terminals: LOAD; check phase order before commissioning.
Dimension drawings (mm)
Terminal torque and installation checklis
| Terminal position | Recommended torque | Max torque | Conductor range | Remarks |
|---|---|---|---|---|
| Line / phase terminals | 2.0N·m | 2.5N·m | 1-25mm² | Use calibrated torque screwdriver. |
| Neutral terminals | 2.0N·m | 2.5N·m | 1-25mm² | Confirm N pole position before energizing. |
| Load terminals | 2.0N·m | 2.5N·m | 1-25mm² | Re-check after installation. |
Warning: Incorrect terminal tightening may cause overheating, loose connection, nuisance tripping or product malfunction. For EV, PV,heat pump, VFD, UPS or storage applications, confirm RCD type selection separately before installation.
3. Evidence Package and After-sales Traceability
RCD-OS(TM) engineering delivery package
| Document | Purpose |
|---|---|
| Application Boundary Note | Confirms suitable, unsuitable and extra-confirmation scenarios before quotation. |
| Certificate Coverage Matrix | Maps model, rating, pole configuration and standard coverage to available certificate documents. |
| Test Report Mapping Sheet | Links the model/rating family to relevant test report or certificate reference. |
| Wiring Diagram | Shows terminal order, N position and line/load convention for HO232 and HO234. |
| Terminal Torque Sheet | Defines recommended torque, max torque and conductor range. |
| Dimension Drawing | Supports panel layout and DIN-rail integration. |
| Factory Test Summary | Batch-level summary for residual-current operating test, dielectric test, instantaneous trip test and visual/marking/terminal inspection. |
| Batch Number Record | Provides batch ID for future tracing and after-sales diagnosis. |
| Batch Sample Record | Retained samples for engineering comparison where applicable. |
| After-sales Contact Sheet | Defines photo/data requirements for rapid diagnosis. |
After-sales diagnosis loop
| Batch ID | Wiring photos | Load type | Fault symptom | Diagnosis class |
Diagnosis class: product issue / installation issue / wrong selection / customer misuse / pending confirmation.
Application Boundary Note
| Boundary | Explanation |
|---|---|
| Normally suitable | Standard distribution boards where Type A RCBO protection is confirmed by design; residential and light commercial circuits; projects requiring compact RCBO with overload, short-circuit and residual-current protection. |
| Requires extra confirmation | EV charger, PV inverter, heat pump, VFD/inverter, UPS, energy storage, high leakage current loads, special selectivity requirements, or local regulations requiring Type F/B/B+ or 6mA DC residual-current detection. |
| Not a safe universal claim | Do not claim that Type A RCBO is suitable for all EV/PV/VFD applications. Smooth DC residual current risk must be addressed by project design, equipment function or correct RCD type. |
Recommended sales rule: quotation = product price + model-specific datasheet + application confirmation form + certificate coverage matrix +wiring diagram + terminal torque sheet + dimension drawing.
