Fuji Electric Time Delay Relays
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Fuji Electric Time Delay Relays

Fuji Electric Time Delay Relays

Time Delay Relays reduce workloads of the power supply in an industrial unit by having automatic restart as a staggered starting method in sequence during the time of instantaneous voltage interruption. Having an automatic restart at the time of voltage dips as a sequential starting method, this relay helps to reduce the workloads of the power supply. 3 types of operating modes such as instantaneous restart, timed restart, and anti-restart are available depending on the duration of the power failure. It is capable of reliable releasing of the maintained circuit, despite the residual voltage in the power supply circuit.
DIN48 sized analogue timer adopts sexagesimal conversion-free, direct-reading time-scale. The MS4S is a timer with four operation modes. The on-delay, flicker, one-shot or signal off-delay operation modes can be selected.
The ST7P is a highly efficient miniaturized on-delay timer. The maximum timing interval is 12 hours.

Features & Benefits


●MS4S series

Direct-reading time-scale and compact body .

ST7P series

Miniature size Super Timer


●MS4S series

MS4S series Super Timers feature an easy setting and direct-reading system of four time-scale.



MS4SM : Multimode operation type

MS4SA : On-delay operation

MS4SC : On-delay operation with instantaneous contact

MS4SF : Off-delay operation

MS4SY : For star-delta starting

MS4SR : Repeat operation


●Timing range

 0.05sec to 60hours




Surface mounting

Flush mounting


●ST7P series

compact and highly accurate Super Timers.



 The ST7P and ST7B are on-delay operation types.


●Timing range

 0.06sec to 24hours




Screw terminal, rail mounting


Wire wrap

PC board.