SSP1D425BD

What type of component is this?

The SSP1D425BD is a single-phase, panel-mounted solid-state relay designed for switching DC electrical loads using a low-voltage DC control signal.

What control voltage does the relay accept?

The control circuit accepts 3.5 to 32 V DC, with an input current of approximately 10 to 15 mA.

What output voltage range can it switch?

It is designed to switch DC output voltages from 1 to 150 V DC.

What is the maximum rated load current?

The relay has a rated load current of up to 25 A. The achievable current depends on ambient temperature, heat dissipation and the selected heatsink arrangement.

Can this relay switch AC loads?

No. This model uses a MOSFET-based DC output and is intended for DC switching. It should not be selected for switching AC loads.

How quickly does the relay switch?

The specified turn-on and turn-off response times are both 0.1 ms, making it suitable for applications requiring rapid DC switching.

Does the relay require a heatsink?

A heatsink may be required when switching higher currents or operating at elevated ambient temperatures. The load should be checked against the applicable derating curve before installation.

What type of output technology is used?

The relay uses a MOSFET solid-state output. This provides contactless switching without the mechanical contacts found in an electromechanical relay.

Does it include an input status indicator?

Yes. A green LED provides local indication when the input control circuit is energised.

What is the operating temperature range?

The specified ambient operating temperature range is -40°C to 80°C. Current derating and suitable thermal management must be considered across this range.

What is the storage temperature range?

The relay can be stored at ambient temperatures from -40°C to 125°C, subject to appropriate environmental conditions.

How is the relay mounted?

The SSP1D425BD is designed for panel mounting. It is supplied as a complete relay and uses screw-terminal connections for the input and output wiring.

Which conductor sizes can be connected?

Input screw terminals accept conductors from 0.2 to 3.3 mm². Output terminals accept up to 5.26 mm² with cable ends or up to 8.26 mm² without cable ends.

What terminal tightening torque is specified?

The specified tightening torque is 1.5 to 1.7 N·m for the input terminals and 2 to 2.2 N·m for the output terminals.

What is the maximum surge current?

The relay is rated for a surge current of up to 106 A for 10 ms. This short-duration figure should not be treated as the continuous load rating.

What is the voltage drop when the output is on?

The maximum on-state voltage drop is less than 2.1 V. This voltage drop produces heat, which should be considered when determining thermal requirements.

How much current can pass when the output is off?

The maximum specified off-state leakage current is 0.3 mA. Sensitive loads should be assessed to ensure this small leakage current does not cause unintended operation.

What level of electrical isolation does it provide?

The specified dielectric strength is 2.5 kV AC between the input and output and between the input or output and the case.

What enclosure protection rating does it have?

The relay has an IP20 protection rating. It is therefore intended for installation within a suitable electrical panel or enclosure.

Which applications commonly use this relay?

Typical uses include switching DC heaters, solenoids, valves, lamps and other compatible DC loads in industrial control panels and automated machinery.

Does it have normally open switching behaviour?

Yes. The relay provides one normally open solid-state switching function, meaning the output is off until the required DC control signal is applied.

What protection device is recommended?

The specified co-ordination options include a 25 A curve B miniature circuit breaker for Type 1 co-ordination or a 13 A curve B miniature circuit breaker for Type 2 co-ordination.

What standards and certifications are associated with the relay?

The product documentation lists UL, CE, CSA and EAC markings or certifications, together with standards including UL 508, IEC 60950-1, IEC 62314 and CSA C22.2 No. 14-13.

How much does the relay weigh?

The net product weight is approximately 89.2 g.