Relays and timers

Relays and timers are selected by their task in control. Distinguish interface or impulse versions, monitoring of a quantity and timed action before comparing parameters.

Three areas for different tasks

The interface and impulse relays section includes standalone relays, relay modules and complementary bases or sockets. Determine the required product type before comparing mounting width. A relay, socket and retaining clip are different items; one name should not be treated as the entire kit.

Continue to monitoring relays when monitoring is the main task. Clarify the quantity and required behaviour when it deviates. A delay or indication in a specific monitoring version does not mean universal capabilities in all relays. Selection relates to the exact application and reference.

In time relays and timers , distinguish delay relays from devices for daily, weekly and other schedules. An analogue, digital or astro designation applies to a specific model. Check the timed action and setting method required instead of treating every product with “timer” in its name as suitable for every task.

Compare parameters separately

Separate the chosen device's supply or coil, output contact configuration and specific functions in its data. Do not confuse control voltage with contact characteristics. Contact count, pole designation and mounting space are also different criteria. Similar housing shape does not establish identical action or compatibility with any base. Explicitly clarify whether the base remains during replacement.

Clarify whether the offer includes a socket, accessories, indication or other parts. When extending existing controls, retain codes for the elements that remain too. This allows the specific combination to be checked without transferring functions and accessories from one similarly named model to another. A photograph of an assembled module does not replace the contents list.

Retain the boundary with other equipment

When the task concerns a circuit breaker, use circuit breakers and fuses instead of the relay area. The general distribution boards and electrical equipment section helps organise the remaining components. For the final choice, describe function, power supply version, outputs and package contents. You then compare matching offers for a specific task without confusing different device types by their general location in a board.