DOLD cyclic and pulse-activated relays, available from ELTRON, are used to control electrical circuits in a time-programmed manner – cyclically or upon receiving a control pulse. They are used in industrial automation, signalling systems, ventilation control, lighting, pumps and other devices requiring precise time control.

Cyclic relays

DOLD cyclic relays allow you to set switch-on and switch-off times in a wide range – from 0.05 seconds to even 300 hours, making them a versatile tool in process automation.

Models available at ELTRON:

• MK 7854N, IK 7854, SK 7854 – compact cyclic relays with 1 or 2 C/O outputs, operating voltage 12–240 V AC/DC, width from 17.5 mm,
• BC 7937N – cyclic version with additional AC/DC supply voltage options,
• BA 7864, EO 7864 – extended relays with various output types (including thyristor and transistor) and additional settings – also with 11 independent operating modes.

Pulse-activated relays

These relays activate the output for a programmed time after detecting a control pulse. Ideal for time control after a signal from a button, sensor or PLC controller.

Models available from ELTRON:

• MK 7851, MK 7852, BC 7932N – compact solutions with various voltage options (from 12 V to 240 V AC/DC), choice of contact configuration (1 C/O, 2 C/O),
• IK 7816, SK 7816, IK 7827 – versions with manual control and time adjustment in the range from 0.1 s to 100 s,
• BA 7981 – an advanced relay with relay, thyristor and transistor outputs, designed for precise industrial applications.

All DOLD time relays available at ELTRON are characterised by high accuracy, reliability, easy configuration and a wide time range. Their compact size allows for convenient installation in switchboards and control cabinets.