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ERM4 intermediate relays are designed for switching, controlling, and signaling auxiliary and power circuits in industrial and power systems. Thanks to the presence of 4 changeover contacts, they allow for the simultaneous switching of multiple circuits, making them a versatile solution for automation systems.
The ERM4 has a rated current of up to 6 A (AC1) and ensures stable operation and durability even under demanding operating conditions. The contacts are made of AgNi, and the housing of the insulating part, made of PA66 polyamide, guarantees a high level of electrical safety and resistance to external factors.
Key advantages
- Multi-contact design: 4 changeover contacts for simultaneous control of multiple circuits.
- Visual monitoring: mechanical operation indicator and versions with LED indication.
- Ease of use: test button for checking contacts.
- Safety: increased insulation between contacts, environmentally friendly (cadmium-free).
- Versatility: various coil supply voltage options (12 V DC, 24 V AC/DC, 110/220 V DC, 230 V AC).
- Compatibility: installation in ERB4-M and ERB4-T bases, compatibility with accessories (clamps, rails, protection modules).
Models
- ERM4-012DCL: 12 V DC, with red LED
- ERM4-024DC: 24 V DC, without LED indication
- ERM4-024DCL: 24 V DC, with red LED
- ERM4-024AC: 24 V AC, without LED indication
- ERM4-024ACL: 24 V AC, with red LED
- ERM4-110DCL: 110 V DC, with red LED
- ERM4-220DCL: 220 V DC, with red LED
- ERM4-230AC: 230 V AC, without LED indication
- ERM4-230ACL: 230 V AC, with red LED
Technical Specifications
- Number of contacts: 4 CO (changeover)
- Rated current: 6 A (AC1)
- Rated contact voltage: AC 250 V
- Minimum switching power: 0.3 W
- Mechanical life: over 20 million cycles
- Operating temperature range: AC: -40…+55°C, DC: -40…+70°C
- Protection rating: IP40
- Dimensions: 27.5 × 21.2 × 35.6 mm
Applications
- Switching of auxiliary and power circuits in industrial systems.
- Use in control and automation cabinets.
- Status signaling in power and industrial facilities.
- Mounting on a TN35 DIN rail using ERB4-M or ERB4-T sockets.
- Functionality expansion using ERC modules and busbars.