Phoenix Contact 1109546 REL-MR-BL-24AC/21-21 Relay – 24V AC, DPDT, 8A

Description

Product Overview
The Phoenix Contact 1109546 relay, model REL-MR-BL-24AC/21-21, is a miniature power relay for switching electrical circuits in industrial control and automation applications. Its 24V AC coil operates two changeover contact sets, allowing one control signal to switch two separate circuits.
The relay has a compact white housing and plug-in mounting design. Its AgNi (silver-nickel) contacts support switching applications within the manufacturer’s specified electrical limits. A compatible mounting accessory is required for operation.

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Technical Specifications
Specification Details
Brand Phoenix Contact
Manufacturer part number 1109546
Model REL-MR-BL-24AC/21-21
Product type Miniature power relay
Nominal coil voltage 24V AC
Operating voltage range 19.2–34.8V AC
Mains frequency 50/60Hz
Contact configuration 2 changeover contacts (DPDT)
Contact material AgNi (silver-nickel)
Limiting continuous current 8A
Maximum switching voltage 250V AC/DC
Maximum inrush current 12A for 20ms
Typical input current 31.6mA at nominal voltage
Connection method Plug-in / solder connection
Dimensions (W × H × D) 12.7 × 29 × 15.7mm
Operating temperature −40°C to +70°C
Mounting Plug-in; compatible accessory required

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Key Features
– 24V AC coil: For compatible AC control circuits.
– DPDT contact arrangement: Two changeover contacts for switching separate circuits.
– AgNi contact material: Silver-nickel contacts for appropriate switching applications.
– Compact dimensions: Suitable for space-conscious control assemblies.
– Plug-in construction: Designed for use with a compatible mounting accessory.
– Wide operating temperature range: Specified for operation from −40°C to +70°C.
– Recognized approvals: UL and cUL recognition are listed by the manufacturer.

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Applications
Depending on the electrical load and circuit design, this relay may be suitable for:
– Industrial automation panels
– Electrical control and interface circuits
– Machine control systems
– Building automation equipment
– Switching and interlocking circuits
– Maintenance and replacement of compatible relay assemblies
Installation and Compatibility
Before installation, confirm the 24V AC coil supply, terminal layout, compatible mounting accessory and load requirements. The 8A continuous-current limit and switching capacity depend on the load type and operating conditions. For inductive loads, motors or other demanding applications, consult the manufacturer’s switching ratings and wiring documentation.
Phoenix Contact Relay Supply in the UAE
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