Schneider Electric A9N61521 Acti9 C60H-DC 1A 2P C-Curve DC MCB – 6kA, 500V DC
The Schneider Electric A9N61521 Acti9 C60H-DC is a 1A 2P C-curve DC MCB designed for DC circuit protection, with a 500V DC rated operational voltage and 6kA breaking capacity at 500V DC according to IEC/EN 60947-2. It provides overload and short-circuit protection, control and isolation in suitable DC distribution applications.
Description
The Schneider Electric A9N61521 is an Acti9 C60H-DC miniature circuit breaker (MCB) designed for DC circuit protection in industrial, control, automation, transport and renewable-energy applications. It is a 2-pole, 1A, C-curve DC MCB with a maximum rated operational voltage of 500V DC when the two poles are connected in series. Schneider Electric identifies the A9N61521 as part of the C60H-DC range and specifies it for protection against overload and short-circuit currents.
With a 1A rated current and C-curve thermal-magnetic tripping, the A9N61521 DC MCB provides circuit protection and switching/isolation functionality for suitable direct-current distribution systems. Its 6kA breaking capacity at 500V DC provides a defined level of short-circuit protection according to IEC/EN 60947-2. The C60H-DC range also provides higher breaking capacities at lower DC voltages, depending on the system configuration.
The 2P configuration is particularly important for higher-voltage DC circuits because the poles are connected in series to achieve the 500V DC rated operational voltage. Schneider’s technical catalogue specifies the 2P C60H-DC arrangement with supply from above or below according to the applicable polarity arrangement. Correct installation and polarity must therefore follow Schneider Electric’s technical documentation.
The Schneider A9N61521 1A DC MCB occupies four 9 mm modules, equivalent to approximately 36 mm of modular width, making it suitable for installation in compatible electrical distribution boards, control panels and enclosures. It is designed for DIN-rail mounting and can be combined with selected C60H-DC accessories for additional signalling, remote tripping and monitoring functions.
For installations requiring compact DC circuit breakers, the A9N61521 combines overload protection, short-circuit protection, control and isolation in a single modular device. Schneider Electric also highlights fast closing independent of toggle actuation speed and compatibility with comb-busbar installation.
The Acti9 C60H-DC A9N61521 is therefore suitable where a 1A 2-pole DC circuit breaker is required for properly designed DC distribution and control circuits. Always verify the system voltage, short-circuit level, polarity, wiring arrangement and applicable installation standards before selecting the breaker.
| Specification | Details |
|---|---|
| Manufacturer | Schneider Electric |
| Product Range | Acti9 |
| Product Family | C60H-DC |
| Product Type | Miniature Circuit Breaker (MCB) |
| Reference | A9N61521 |
| Number of Poles | 2P |
| Protected Poles | 2 |
| Rated Current | 1A at 25°C |
| Network Type | DC |
| Tripping Technology | Thermal-magnetic |
| Tripping Curve | C Curve |
| Rated Operational Voltage | 500V DC |
| Rated Insulation Voltage (Ui) | 500V DC |
| Rated Impulse Withstand Voltage (Uimp) | 6kV |
| Breaking Capacity at 500V DC | 6kA Icu |
| Breaking Capacity at 440V DC | 10kA Icu |
| Breaking Capacity at 250V DC | 20kA Icu |
| Breaking Capacity at 220V DC | 20kA Icu |
| Rated Service Breaking Capacity | 75% of Icu |
| Utilization Category | Category A |
| Isolation Suitability | Yes, according to IEC/EN 60947-2 |
| Standards | IEC/EN 60947-2 |
| Mounting | DIN rail |
| Modular Width | 4 × 9 mm modules |
| Approx. Width | 36 mm |
| Operating Temperature | -25°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Pollution Degree | 3 |
| Overvoltage Category | IV |
| Degree of Protection | IP20; IP40 when installed in enclosure |
| Colour | White, RAL9003 |
| Accessories | Auxiliary/remote signalling and tripping options available |
| Busbar Compatibility | Comb-busbar compatible |
| Electrical Endurance | Up to 3,000 cycles |
| Mechanical Endurance | Up to 20,000 cycles |
| Weight | Approx. 0.256 kg |
Key Features
- 1A rated current for low-current DC circuit protection.
- 2-pole DC MCB configuration.
- C-curve tripping characteristic for suitable general-purpose DC applications.
- 500V DC rated operational voltage in the 2P series configuration.
- 6kA breaking capacity at 500V DC according to IEC/EN 60947-2.
- Up to 20kA Icu at 220–250V DC, depending on system voltage and configuration.
- Thermal-magnetic protection against overload and short-circuit currents.
- Suitable for circuit control and isolation.
- Designed for DC distribution systems.
- DIN-rail mounting for modular electrical panels.
- Compact 4 × 9 mm modular width.
- Compatible with selected C60H-DC auxiliary and remote signalling/tripping accessories.
- Compatible with comb busbar installation.
- Fast closing independent of toggle actuation speed.
- Designed according to IEC/EN 60947-2.
- Suitable for industrial control, automation, transport and selected renewable-energy applications.
Applications
- DC distribution systems
- Industrial DC control circuits
- Automation and control panels
- Electrical control cabinets
- DC auxiliary circuits
- Transport electrical systems
- Industrial machinery control
- Renewable-energy electrical systems
- DC feeder and distribution circuits
- Low-current DC protection applications
- DC circuit isolation and switching
- Electrical installations requiring 1A 2-pole DC circuit protection
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