Falcon A7851-12 MA851 V Fail S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$635.00
$325.42
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Falcon A7851-12 MA851 V Fail Safe Lock Case, Right-Handed, Field Reversible

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Model: A7851-12-RH

In Stock (leaves warehouse same day if ordered before 3pm ET)

$635.00
$325.42
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Falcon A7851-12 MA851 V Fail Safe Lock Case, Right-Handed, Field Reversible

The Falcon A7851-12 MA851 V Fail Safe Lock Case is a commercial-grade replacement lock case engineered for right-handed door configurations and designed with field reversibility for versatile installation flexibility. This component is intended for use with compatible Falcon MA851 V series mortise lock applications and does not include an armor front, allowing integration with existing or separately sourced front plates. Built for demanding commercial environments, this lock case delivers the reliable fail-safe operation that security professionals depend on for access control systems.

Key Features

  • Fail Safe Operation: Fail safe configuration ensures the lock case defaults to an unlocked state upon power loss, supporting life-safety and egress compliance in commercial applications.
  • Field Reversible Design: Can be reconfigured on-site to accommodate varying installation requirements, reducing the need for additional parts or specialized ordering.
  • Right-Handed Configuration: Factory set for right-handed door applications, providing straightforward compatibility with standard commercial door setups.
  • Armor Front Not Included: Ships without armor front, allowing installers to pair with an existing or application-specific armor front for customized configurations.
  • MA851 V Series Compatibility: Designed as a direct replacement component for Falcon MA851 V series mortise lock assemblies, ensuring proper fit and function.
  • Commercial-Grade Construction: Engineered to meet the performance standards required for commercial door hardware applications across a wide range of facility types.
  • Replacement Parts Designed for Longevity: Sourced as a genuine Falcon lock part, this case maintains the performance integrity of the original MA851 V assembly.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Miscellaneous Hardware
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: A7851-12-RH
  • Features: Falcon Lock Parts

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Retail Establishments
  • Industrial and Warehouse Facilities

Why Falcon MA851?

Falcon MA851 V series components are trusted by commercial hardware professionals for their reliable fail-safe operation and field-configurable design, making them well-suited for access control and life-safety applications. As a genuine Falcon replacement part, the A7851-12 lock case maintains the fit and performance standards of the original assembly, supporting long-term reliability in high-demand commercial installations.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Miscellaneous Hardware
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
A7851-12-RH
Features:
Falcon Lock Parts

Falcon A7851-12-RH – Frequently Asked Questions

1) What does the '12' and '24' option mean on the Falcon A7851 fail safe lock case?
Those are the voltage series choices for the A7851 electrified lock case: 12 and 24. Pick the one that matches the power supply feeding the opening, because the solenoid in the case is built for one or the other, not both. Everything else about the case (fail safe operation, right-hand factory setting, field reversibility) is the same across the two.
2) Does the Falcon A7851-12 lock case come with the armor front?
No. The A7851-12 ships as the lock case only, with no armor front. You reuse the front off the lock you are servicing or source one separately to suit the application. Budget for that before the truck rolls, because without a front the case cannot be finished into the door edge.
3) I have a left-hand door. Can I still use the right-handed Falcon A7851-12 case?
Yes. The case is set right-handed at the factory but it is field reversible, so it can be reconfigured on site for the opposite hand. You do not need to order a separate left-hand part number.
4) What happens to this Falcon lock case when the power goes out?
It is a fail safe device, so losing power leaves it unlocked. That is the configuration you want on egress paths and life-safety openings where people have to get out during an alarm or outage. If the opening instead needs to stay secure when power drops, a fail safe case is the wrong choice and you want a fail secure version.
5) Which Falcon mortise locks does the A7851-12 case fit?
It is the replacement case for Falcon MA851 V series mortise lock assemblies. It is a genuine Falcon part intended to go back into an existing MA851 V lock, so trim, cylinder and front from that assembly carry over. It is not sold as a complete lock; it is the internal case only.
6) I am standardizing electrified mortise locks across a building. Can I stock one A7851 case for all the doors?
Largely, yes. Because the case reverses in the field, one hand covers openings swinging either way, so you are not stocking left and right versions. What you do have to split on is voltage: the case comes as a 12 or a 24, so stock to whatever your access control power supplies run. Fronts are separate either way.
7) Is the Falcon A7851-12 rated for commercial traffic or is it a residential part?
Commercial. It is built for commercial door hardware duty and gets specified in offices, schools, healthcare, government buildings, retail, warehouses and multi-tenant residential. It is not a residential-grade item.
How fast can I get the Falcon A7851-12-RH delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Falcon A7851-12-RH come with a warranty?
Absolutely. The Falcon A7851-12-RH is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Falcon A7851-12-RH?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Falcon A7851-12-RH from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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