DOLD interface and switching relays, available from ELTRON, are universal components for isolating, amplifying and transmitting control signals in automation systems and electrical installations. Thanks to a wide range of contact configurations, housings and auxiliary functions, they are ideal for applications requiring reliable switching and signal integration.

Applications and functions

DOLD relays enable:

• galvanic isolation of input and output signals,
• switching and disconnecting loads (including higher thermal currents),
• manual or automatic control,
• mounting on a DIN rail or as feed-through modules.

Solutions available at ELTRON:

Switching relays:

• MK 8852, AD 8851, UG 8851 – designed for reliable circuit control, with a configuration from 2 C/O to 4 NO / 4 NC, with a thermal current of up to 8 A.

Impulse and bistable relays:

• BA 7632 – impulse relay with 3 NO contacts, ideal for lighting and switching systems,
• OB 5694 – bistable relay, energy-saving, with status memory and high switching current (up to 16 A).

Interface relays (input-output):

• From compact models such as the IG 3051 (1 NO, width 9 mm) to advanced models such as the IN 8701 (4 C/O, width 52.5 mm),
• Models such as IK 8701, IL 8701, MK 8804N offer various contact configurations (up to 6 C/O) and high load capacity (up to 16 A),
• The 3056 series (e.g. CA 3056, CB 3056, CC 3056) – exceptionally compact modules with a protective LED and manual reset function.

Systems with manual control option:

• CB 3057, IP 3070/022, SP 3070/022 – switching modules with manual control option for the contact, convenient for switchboards requiring frequent intervention.

Versions for mounting on a base:

• Relays OA 5672, OA 5668, HC 3093 – ready for through-hole or DIN rail mounting, particularly useful in service systems and installation upgrades.

All DOLD interface and switching relays available from ELTRON are characterised by high durability, compliance with industry standards and compact design, facilitating integration into a variety of automation and control systems.