Corbin Russwin ED5400-MELR Vertical Rod Exit with Electric Latch Retraction

Access control on a surface vertical rod exit device gives most installers one of two options: electric latch pullback via solenoid (M94), or motor electric latch retraction (MELR). The solenoid approach works, but it draws significantly more power during retraction, generates heat over continuous operation, and requires the Corbin Russwin 781N Controller for sequencing. The MELR option skips all of that. The Corbin Russwin ED5400 MELR uses a motor-driven latch retraction mechanism that consumes 86% less power during retraction than solenoid-based devices, runs on a standard power supply without a dedicated controller, and has a maintenance-free design with fewer moving parts overall. For access control integrators who are calculating amp loads across multi-door systems, that power reduction compounds fast.

This is the electrified version of the ED5400 surface vertical rod exit device, part of the Grade 1 ED5000 Series. For the full Corbin Russwin ED5000 Series lineup, browse Corbin Russwin ED5000 exit devices. For power supplies and access control components, view our electronic hardware catalog.

How MELR Works

When the access control panel sends a signal, the motor retracts both latch bolts simultaneously and holds them retracted for as long as the device remains energized. The door operates freely as though it's mechanical. When power is removed, the device returns immediately to its fail-secure mechanical self-latching mode. Both the top and bottom bolts re-engage the moment the door closes. There's no power required to maintain the latched state. Power is only consumed during the retracted hold period, which is why the MELR's 0.172 amp continuous holding current is so much lower than solenoid alternatives.

The M92 touchbar monitoring option adds a Request to Exit (REX) signal output when the pushbar is depressed. This is the signal used to shunt alarm systems, release electromagnetic door holders, or provide door monitoring integration to a central access control panel. If your installation requires REX output, specify M92 at time of order.

Corbin Russwin ED5400 MELR Technical Specifications

Series: ED5000. Device type: Surface Vertical Rod (SVR). Electric function: MELR, Motor Electric Latch Retraction. ANSI standard: A156.3, Type 2, Grade 1. ADA: meets ANSI A117.1 Accessibility Code. UL/cUL Listed: yes, panic hardware per UL 305. Fire rating: ED5400A-MELR carries 3-hour A label for single doors 4' x 8' and double doors 8' x 8'. NFPA: complies with NFPA 101 Life Safety Code and NFPA 80 (fire-rated version). California State Fire Marshal: approved per section 13144.1 California Health and Safety Code. Input voltage: 24V AC or DC. Inrush current: 6 to 9 amps at 24 to 28VDC. Holding current: 0.172 amp, continuous duty. Power consumption vs. solenoid: 86% less during retraction. Power supply: standard supply, no 781N Controller required. Mode: fail secure (returns to self-latching on power loss). Handing: device is handed, easily field reversible. Trim: handed. Minimum stile: 4-1/2" (114mm). Bar length: standard 36" fits 30" to 36" doors; optional 48" fits 36" to 48" doors (W048); optional 24" for 24" doors (W024). Door thickness: standard 1-3/4" (44mm). Door height: standard top rod for 7' doors; all rods field cut to size. Top latchbolt: 3/4" (19mm) throw, stainless steel pullman-type with automatic deadlatching. Bottom latchbolt: 5/8" (16mm) throw deadbolt, held retracted during door swing. Vertical rods: 1/2" O.D. tubular brass, bronze, or stainless steel with rod guides. Projection: 3-1/4" (83mm) active, 2-3/4" (70mm) dogged. Top strike: adjustable roller strike with positive locking plate and shims. Bottom strike: flush mounted. Warranty: 5-year limited.

Fire Alarm and Access Control Integration

The ED5400 MELR interfaces directly with central or local fire alarm systems, automatic door operators, security alarm systems, and access control panels. When the fire alarm activates, the signal removes power from the MELR, the latch bolts re-engage, and the door returns to its full mechanical panic egress mode automatically. No manual reset required. This makes the ED5400 MELR the correct specification for fire-rated openings where access control and fire alarm integration are both required on the same door.

Note: MELR is not compatible with electric dogging (M97) or delayed egress (D) on the same device. If cylinder dogging is needed, specify M52. Mechanical dogging is not available on fire-rated versions.

For all compatible outside trims, browse the full exit hardware catalog.