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The ABB GSH201 AC-C16 is a 1P+N-pole Residual Current Circuit Breaker with Overcurrent Protection (RCBO). It integrates three core functions: overload protection, proteção contra curto-circuito, and residual current protection. With a rated current of 16A, a Type C tripping curve, and an Type AC residual current detection type, its rated residual operating current is typically 30mA (the complete model is GSH201 AC-C16/0.03). As a member of the ABB Compact Home product series, it is suitable for the protection of terminal power distribution circuits in residential and commercial buildings.
- In-depth Analysis of Model Naming Convention
| Segment | Code | Significado |
| Series Identifier | GSH201 | 1P+N-pole RCBO of the Compact Home series |
| Residual Current Type | AC | Detects sinusoidal alternating residual current, suitable for pure AC loads |
| Curva de tropeço | C | Tripping curve type with an instantaneous tripping range of 5-10In, applicable to conventional loads such as lighting and sockets |
| Corrente nominal | 16 | Rated operating current of 16A |
| Residual Operating Current | 0.03 | Rated residual operating current of 30mA (some models may feature 0.01A=10mA) |
| Pole Configuration | 1P+N | 1 phase pole + 1 neutral pole; the neutral pole remains permanently closed, and only the phase pole can be switched off |
Complete Model Example: GSH201 AC-C16/0.03, Product Code: 2TAZ220111R2164
- Core Technical Parameters and Performance Indicators
| Parameter Category | Specific Value | Description |
| Tensão nominal | 230/400V e | Suitable for single-phase branches in single-phase and three-phase systems |
| Corrente nominal (Em) | 16UM | Continuous operating current capacity |
| Rated Short-circuit Breaking Capacity (Icn) | 6o | Short-circuit breaking capacity at 230/400V AC |
| Característica de disparo | Tipo C | Proteção contra sobrecarga: inverse time characteristic, 1.45In≤It≤1.55In (no tripping within 1 hour), 2.55In≤It≤2.85In (tropeçando dentro 2 minutos); Proteção contra curto-circuito: instantaneous tripping at 5-10In |
| Residual Current Protection Parameters | Type AC, IΔn=30mA | Residual current operating time: ≤0.1s (In≤40A, IΔn≤0.03A) |
| Rated Residual Non-operating Current (IΔn0) | 15mA | The circuit breaker shall not trip when the residual current does not exceed this value |
| Mechanical Service Life | ≥20,000 operations | Number of closing and opening operation cycles |
| Electrical Service Life | ≥6,000 operations | Number of closing and opening operation cycles at rated current |
| Width Dimension | 17.5mm | Standard DIN rail mounting width, economizando espaço na caixa de distribuição |
| Mounting Method | 35mm DIN rail | Compatível com IEC 60715 standard rail |
| Temperatura operacional | -25°C ~ +55°C | Adaptable to various indoor environmental conditions |
| Protection Degree (IP Rating) | IP20 | Protection against access to hazardous parts by fingers or solid foreign objects with diameter ≥12mm |
III. Core Functions and Advantages
- Integration of Triple Protection Functions
Proteção contra sobrecarga: Achieves inverse time protection through the thermal effect of bimetallic strips, matching the thermal characteristics of cables to prevent line overheating and aging.
Short-circuit Protection: The electromagnetic release provides instantaneous protection, quickly interrupting short-circuit current to limit fault expansion.
Residual Current Protection: Detects residual current and trips rapidly (≤0.1s) when the current exceeds the set value (30mA), preventing personal electric shock accidents.
- Design and Safety Features
1P+N Structure: The neutral pole remains permanently closed to ensure the neutral line is not interrupted during power-off, enhancing safety.
Current Limiting Function: Quickly limits fault current during short-circuits, reducing the risk of line and equipment damage.
Test Button: Built-in test button for regular verification of the residual current protection function.
Mechanical Indication: Clearly displays the on/off status of the circuit breaker and the cause of tripping.
- Reliability and Compatibility
Está em conformidade com padrões internacionais e nacionais, como IEC 61009-1 e GB/T 16917.1.
Features the same dimensions as the ABB SH200 series miniature circuit breakers, enabling mixed installation.
Offers strong electromagnetic interference resistance to ensure stable operation in complex electrical environments.
- Application Scenarios and Selection Key Points
- Typical Application Scenarios
| Application Field | Applicable Loads | Selection Advantages |
| Distribuição de energia residencial | Living room/bedroom sockets, lighting circuits, air conditioner branches | Residual current protection prevents electric shock; Type C curve is suitable for conventional loads |
| Edifícios Comerciais | Office sockets, public area lighting, small commercial equipment | 1P+N structure saves space; 30mA residual current protection complies with safety regulations |
| Light Industry | Control circuits of small machine tools, power supplies for testing equipment | Triple protection ensures equipment and personnel safety |
| Medical Facilities | Power supplies for non-critical medical equipment | Some 10mA models (GSH201 AC-C16/0.01) can be used in environments sensitive to residual current |
- Core Selection Steps
- Determine Load Type: Select Type C curve for conventional lighting and socket loads; select Type D curve for motor loads.
- Calculate Load Current: Ensure the 16A rated current is greater than the actual load current (a 20% margin is recommended).
- Select Residual Current Type: Choose Type AC for pure AC loads; choose Type A or Type AP-R for loads containing DC components (por exemplo, electronic devices).
- Determine Residual Operating Current: Select 30mA for general locations; select 10mA for humid environments or locations with high safety requirements.
- Verify Breaking Capacity: Ensure the 6kA breaking capacity meets the short-circuit current requirements of the installation point.
- Installation and Operation Precautions
- Especificações de fiação
Strictly distinguish between the phase pole (eu) and neutral pole (N); the neutral line must be connected to the N terminal, e conexão reversa é proibida.
Ensure the circuit is de-energized before wiring; the cable cross-section should match the 16A rated current (1.5mm² copper core cable or above is recommended).
Tighten the terminal screws to the torque specified in the manual (usually 2.5N·m) to prevent overheating caused by poor contact.
- Operation and Maintenance
Verify the residual current protection function using the test button after installation.
Press the test button regularly (monthly is recommended) to check if the residual current protection is functioning properly.
After a residual current trip, identify and eliminate the fault cause before manually resetting the circuit breaker.
Avoid frequent operation; inspect the circuit breaker for damage especially after a short-circuit fault.
- Safety Warnings
This product cannot be used for neutral line overcurrent protection of three-phase unbalanced loads.
It cannot be used as a replacement for an isolating switch; ensure all power supplies are disconnected during power-off maintenance.
It is not suitable for use in flammable and explosive environments unless special protective measures are taken.
Follow the manufacturer’s recommendations when used in conjunction with other protective devices (por exemplo, surge protectors).
- Comparison with Similar Products
| Comparison Item | GSH201 AC-C16 | SH201-C16 (MCB) | GSH202 AC-C16 (2P) |
| Funções de proteção | Overload + Short-circuit + Residual Current | Overload + Short-circuit only | Overload + Short-circuit + Residual Current |
| Pole Configuration | 1P+N | 1P | 2P (two phase poles) |
| Neutral Pole | Permanently closed | No neutral pole | Both poles can be switched off |
| Width Dimension | 17.5mm | 17.5mm | 35mm |
| Cenários Aplicáveis | Single-phase residential/commercial branches | Branches requiring only overload and short-circuit protection | Scenarios requiring neutral pole switching |
| Faixa de preço | Médio | Baixo | Medium-high |
As a high-performance 1P+N-pole RCBO, the ABB GSH201 AC-C16/0.03 has become the ideal choice for terminal power distribution in residential and commercial buildings due to its compact design, triple protection, and high reliability. It can not only effectively prevent overload and short-circuit faults but also provide 30mA residual current protection to safeguard personal and property safety. Durante a seleção, the tripping curve, residual current type, and residual operating current should be reasonably chosen based on the load type, current magnitude, and safety requirements to ensure optimal protection effectiveness and system compatibility.
