Power limiter OSP-10 1P 25A by Eti-Polam, model 002181014

Eti-Polam OSP-10 1P 25A is a single-pole power limiter designed for low-voltage electrical installations. It controls and limits current flow to prevent overloads and to manage available supply capacity in residential and small commercial distribution boards. The device is intended to work as part of a coordinated electrical protection and load-management scheme to reduce the risk of tripping upstream protection and to ensure stable supply to selected circuits.

Advantages

The power limiter offers compact single-pole design and straightforward integration into standard DIN-rail panels. It provides reliable current limiting up to 25 A, helping to avoid nuisance trips on main protection devices and to allocate limited electrical capacity between circuits. The unit is manufactured by a specialist brand in electrical protection, ensuring conformity with typical industrial and domestic installation practices.

Suitable for

• Residential electrical panels where controlled power allocation is required
• Small commercial or retail premises with limited supply capacity
• Installations where selective limiting prevents upstream breaker trips
• Retrofit projects needing a compact single-pole power limiting device

When it may not be suitable

This single-pole limiter is not intended for three-phase or high-current industrial mains where multi-pole solutions and higher current ratings are required. It is also not a substitute for main circuit breakers, residual current devices, or overcurrent protection designed as primary protection; it is a supplementary device for managing load and limiting power within its rated current.

Key specifications

• Configuration: single-pole (1P)
• Rated limiting current: 25 A
• Intended voltage level: low-voltage distribution networks
• Mounting: DIN-rail compatible enclosure for distribution boards
• Application: power/current limiting for load management and overload prevention

How to use

Install the OSP-10 1P 25A on a standard DIN-rail inside the distribution board according to local electrical codes. Connect the device in series with the circuit to be limited so that all current flows through the limiter. Coordinate settings and protection upstream and downstream to ensure proper selective operation; where applicable, consult installation documentation and a qualified electrician for correct wiring and commissioning. Regular inspection and testing should be part of routine electrical maintenance.

What to consider before purchase

• Verify that a single-pole 25 A limiter matches the load requirements of the circuit to be controlled
• Check compatibility with the existing distribution board and DIN-rail mounting space
• Ensure the device’s functional role (supplementary load management) fits the intended protection scheme
• Confirm compliance with local electrical standards and installation rules

Usage recommendations

Use the power limiter as part of a coordinated protection strategy: place it in the circuit you want to restrict, coordinate with upstream protection, and have installation and commissioning performed or verified by a licensed electrician. Periodically review connected loads to ensure the 25 A rating remains appropriate.