Schneider Electric Acti9 C60H-DC A9N61517 40A 1-Pole C-Curve DC MCB – 6kA, 250V DC

Description

The Schneider Electric A9N61517 Acti9 C60H-DC 40A DC MCB is a high-quality 1-pole miniature circuit breaker designed for reliable protection of direct-current electrical circuits against overload and short-circuit conditions. As part of the Acti9 C60H-DC range, it combines circuit protection, control and isolation in a compact solution for DC distribution and industrial applications.

With a 40A rated current, C-curve thermal-magnetic protection, and 250V DC rated operational voltage, the A9N61517 DC circuit breaker is suitable for a wide range of DC distribution, control and automation applications. Schneider Electric specifies a 6kA ultimate breaking capacity at 250V DC, while the C60H-DC family provides up to 10kA at 220V DC and 20kA at 110V DC.

The C-curve characteristic provides thermal protection against overloads and magnetic protection against short-circuit currents. This makes the Schneider A9N61517 40A MCB suitable for DC feeders and distribution circuits where dependable fault protection and controlled interruption are required.

The device is suitable for industrial isolation according to IEC/EN 60947-2 and supports optional accessories for auxiliary indication, remote monitoring and related functions. Schneider Electric also specifies faster and more flexible installation through compatible comb busbar systems.

Schneider Electric’s technical documentation identifies the C60H-DC family for direct-current applications including industrial control, automation, transport and renewable-energy systems. The devices are polarised, so the manufacturer’s polarity requirements must be followed during installation.

For photovoltaic or solar applications, the actual suitability should be verified against the complete system voltage, polarity, fault-current characteristics and applicable installation standards rather than relying solely on the term “solar DC MCB.”