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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, Kurzschlussschutz, 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 | Meaning |
| 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 |
| Auslösekurve | C | Tripping curve type with an instantaneous tripping range of 5-10In, applicable to conventional loads such as lighting and sockets |
| Nennstrom | 16 | Rated operating current of 16A |
| Residual Operating Current | 0.03 | Rated residual operating current of 30mA (some models may feature 0.01A=10mA) |
| Polkonfiguration | 1P+N | 1 phase pole + 1 neutraler Pol; 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 | Beschreibung |
| Nennspannung | 230/400V und | Suitable for single-phase branches in single-phase and three-phase systems |
| Nennstrom (In) | 16A | Continuous operating current capacity |
| Rated Short-circuit Breaking Capacity (Icn) | 6Die | Short-circuit breaking capacity at 230/400V AC |
| Auslösecharakteristik | Typ C | Overload protection: inverse time characteristic, 1.45In≤It≤1.55In (Kein Stolpern im Inneren 1 hour), 2.55In≤It≤2.85In (innerlich stolpern 2 Minuten); Short-circuit protection: 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, saving distribution box space |
| Montagemethode | 35mm DIN rail | Compliant with IEC 60715 standard rail |
| Betriebstemperatur | -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
Überlastschutz: 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- und Sicherheitsmerkmale
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
Complies with international and national standards such as IEC 61009-1 und 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
- Typische Anwendungsszenarien
| Application Field | Applicable Loads | Selection Advantages |
| Stromverteilung für Privathaushalte | Living room/bedroom sockets, lighting circuits, air conditioner branches | Residual current protection prevents electric shock; Type C curve is suitable for conventional loads |
| Gewerbebauten | 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 (z.B., 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
- Verkabelungsspezifikationen
Strictly distinguish between the phase pole (L) and neutral pole (N); the neutral line must be connected to the N terminal, and reverse connection is prohibited.
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 (z.B., surge protectors).
- Comparison with Similar Products
| Comparison Item | GSH201 AC-C16 | SH201-C16 (MCB) | GSH202 AC-C16 (2P) |
| Protection Functions | Overload + Short-circuit + Residual Current | Overload + Short-circuit only | Overload + Short-circuit + Residual Current |
| Polkonfiguration | 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 |
| Anwendbare Szenarien | Single-phase residential/commercial branches | Branches requiring only overload and short-circuit protection | Scenarios requiring neutral pole switching |
| Preisklasse | Medium | Low | 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. During selection, 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.
