PHOENIX CONTACT REL-MR-21 Miniature Relay.pdf

The REL-MR-...21 plug-in miniature relay is a high-end device designed for innovative PLC ranges. It features compact dimensions, rugged construction, and advanced features not typically found in plug-in relays. Key characteristics include:

5 mm width
High operational safety
Cadmium-free, environmentally friendly power contacts up to 250 V AC/6 A
Available with gold plating for low power switching levels (mA) as an option
4 kVrms electrical isolation between input and output
Safe isolation according to EN 50178
High degree of protection, up to IP67 depending on the type

The miniature relays can be used as components for PLC ranges, as well as in industrial products such as interface technology, timer relays, measuring and control technology, and PLC and bus I/O modules.

The relay is available in various types, including:

REL-MR- 4,5DC/21: 4.5 V DC input voltage
REL-MR- 12DC/21: 12 V DC input voltage
REL-MR- 18DC/21: 18 V DC input voltage
REL-MR- 24DC/21: 24 V DC input voltage
REL-MR- 60DC/21: 60 V DC input voltage

The relay has the following technical data:

Nominal input voltage: 4.5 V DC, 12 V DC, 18 V DC, 24 V DC, 60 V DC
Permissible range (with reference to UN): see "Permissible Operating Voltage Range" on page 4
Typical input current at UN: 38 mA, 14 mA, 9 mA, 7 mA, 3 mA
Typical response time at UN: 5 ms, 5 ms, 5 ms, 5 ms, 5 ms
Typical release time at UN: 2.5 ms, 2.5 ms, 2.5 ms, 2.5 ms, 2.5 ms

The relay has the following contact data:

Contact type: Single contact, 1 PDT
Contact material: AgSnO, Ag alloy, hard gold-plated
Maximum switching voltage: 250 V AC/DC, 30 V AC/36 V DC
Minimum switching voltage: 12 V AC/DC, 100 mV
Limiting continuous current: 6 A, 50 mA
Maximum inrush current: On request, 50 mA
Minimum switching current: 10 mA, 1 mA
Maximum shutdown power (ohmic load): 24 V DC, 48 V DC, 60 V DC, 110 V DC, 220 V DC, 250 V AC, 140 W, 20 W, 18 W, 23 W, 40 W, 1500 VA

The relay has the following general data:

Test voltage: Winding/contact, 4 kV, 50 Hz, 1 minute
Ambient operating temperature range: -40°C to +85°C
Nominal operating mode: 100% operating factor
Mechanical service life: 2 x 107 cycles
Electrical service life: see "Service Life Reduction Factor" on page 4
Standards/specifications: IEC 60255/DIN VDE 0435 (in relevant parts), DIN EN 50178/VDE 0160 (in relevant parts), EN 60730/DIN VDE 0631, IEC 60664/IEC 60064 A/DIN VDE 0110
Pollution degree: 3, surge voltage category III, DIN EN 50178/VDE 0160, increased isolation I/O
Approvals: F V A C 1
Mounting position/mounting: Any/can be mounted without spacing