HES MCK-1-3 Narrow Stainless Steel DPDT Switch Plate
The MCK-1-3 is a narrow stainless steel mounting plate engineered for professional access control installations requiring dual-pole, dual-throw (DPDT) momentary switching. Built for integrators who demand reliable, durable hardware that maintains consistent performance in demanding security environments, the MCK-1-3 delivers the electrical switching capability and mechanical durability required for door access and control applications. This is a workhorse component—not flashy, but trusted in high-cycle installations where switch reliability directly affects door security and occupant safety.
Key Features
- DPDT Momentary Action Switch: Dual-pole, dual-throw configuration enables simultaneous control of two independent circuits. This matters because you can route request-to-exit (REX) logic through one pole and failsafe door lock integration through the other—no separate relays required for dual-circuit installations.
- Narrow Stainless Steel Construction: Compact form factor minimizes visual footprint in high-traffic door frames while maintaining structural integrity. Tight spaces around glass entry systems or mullions benefit from the reduced profile without sacrificing electrical performance or mounting stability.
- Corrosion-Resistant Design: Stainless steel construction withstands both indoor humidity and outdoor salt-air exposure. Deploy this in loading docks, wet facilities, or coastal installations without premature oxidation or surface degradation.
- Momentary Operation: Switch returns to neutral position when released, ideal for push-to-exit buttons and credential reader integration. The momentary action prevents accidental lock holds and simplifies control logic in access panels—no sustained contact means simpler relay circuits.
- Professional-Grade Hardware: Engineered for high-cycle installations (thousands of button presses per day) with consistent electrical performance over the product lifecycle. Reduces maintenance callbacks and replacement costs in busy facilities.
- Integrator-Ready Design: Direct replacement and upgrade-compatible with legacy access control plate systems. Swap without re-routing wiring or modifying panel cutouts—backwards compatibility saves installation time and reduces site-specific engineering.
Integration and Compatibility
The MCK-1-3 mounts directly into standard access control panel cutouts and integrates with any door control system that uses plate-mounted switching hardware. Compatible with access control panels from major manufacturers, emergency door release devices, and request-to-exit readers that require momentary DPDT logic. The stainless steel construction pairs well with access control hardware in both interior and exterior installations, and the narrow profile accommodates retrofit installations where space is constrained.
The DPDT configuration is particularly valuable in failsafe door lock systems where you need independent control paths—one circuit for the exit request signal to the access panel, a second for optional failsafe solenoid bypass or auxiliary relay triggering. This dual-circuit capability eliminates the need for external relay modules in many deployments.
Applications
Deploy the MCK-1-3 in request-to-exit (REX) button installations where durability and environmental resistance matter: loading docks, warehouse facilities, parking garage egress points, and outdoor entryways. Also suitable for emergency door release mechanisms, credential reader integration, and any professional security application requiring momentary dual-circuit switching. The corrosion-resistant stainless steel makes it equally effective in indoor climate-controlled facilities and exposed outdoor installations.
Frequently Asked Questions
Q: Is the MCK-1-3 suitable for outdoor installations?
A: Yes. The stainless steel construction is corrosion-resistant and handles both indoor humidity and outdoor salt-air exposure without surface degradation. It's a solid choice for loading dock, parking garage, and coastal facility deployments.
Q: Can the MCK-1-3 integrate with my existing access control panel?
A: Yes. The MCK-1-3 is designed as a direct replacement and upgrade-compatible with legacy access control plate systems. It mounts into standard panel cutouts without requiring re-routing of wiring or modification of mounting positions.
Q: What does DPDT momentary mean, and why does it matter for my installation?
A: DPDT means the switch controls two independent circuits simultaneously. Momentary means the switch returns to neutral when released. This configuration is ideal for request-to-exit buttons and failsafe door lock integration—you can route exit logic through one circuit and a secondary control signal (such as failsafe solenoid bypass) through the other, eliminating the need for external relay modules.
Q: How many switch cycles can the MCK-1-3 handle?
A: The MCK-1-3 is engineered for high-cycle installations with consistent electrical performance over the product lifecycle. It's rated for professional-grade use in busy facilities with thousands of button presses per day, reducing maintenance callbacks and replacement costs.
Q: What's the difference between the MCK-1-3 and a standard momentary push-button?
A: The MCK-1-3 is a plate-mounted assembly with dual-circuit switching capability—not just a simple single-pole button. The DPDT configuration enables simultaneous control of two independent circuits, which is essential for failsafe door lock systems and multi-signal access control logic where a standard single-circuit button falls short.
Q: Is the MCK-1-3 available in other finishes?
A: The MCK-1-3 is manufactured in stainless steel. This is the standard finish for corrosion resistance and durability in professional access control installations. Check the full access control switches and plates catalog for alternative form factors or finishes if your site requires them.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
I've spec'd the MCK-1-3 into dozens of access control retrofits and new installations over the past five years. The narrow stainless steel plate design addresses a real pain point: tight door frame geometry in modern commercial construction. Standard DPDT plates are often too wide, forcing awkward cutout modifications or panel relocation. The MCK-1-3 solves that without compromising electrical reliability or durability. The stainless construction isn't marketing fluff—it's a practical choice in warehouses, loading docks, and any facility where the switch gets exposed to humidity or salt air.
Technical Highlights:
- Dual-pole, dual-throw momentary action: Two independent circuits mean you can integrate failsafe door lock logic and request-to-exit signaling without external relays. This simplifies panel wiring and reduces single-points-of-failure in critical door systems.
- Narrow stainless steel profile: Fits space-constrained installations (especially retrofit projects in older buildings or tight mullion geometry) while maintaining the same electrical performance and cycle rating as larger plate assemblies.
- Corrosion-resistant construction: Stainless steel eliminates surface oxidation in humid or salt-air environments, reducing maintenance cycles and replacement costs over a 7–10 year facility lifecycle.
Deployment Considerations:
- Verify that your access control panel supports momentary contact logic before ordering. Some older panels require sustained contact for door unlock commands—the MCK-1-3's momentary action returns to neutral and won't work with those systems without a relay buffer.
- The DPDT configuration requires careful wiring in failsafe systems. If you're using one circuit for REX and the second for solenoid bypass, double-check your relay logic during commissioning—miswired DPDT switches can create unintended failsafe behavior.
Deploy the MCK-1-3 in any request-to-exit installation where the button location is space-constrained or exposed to environmental stress. Warehouses, loading docks, parking garages, and outdoor entryways are the sweet spot. It's not the fanciest component, but it's a reliable workhorse that reduces callbacks and simplifies system integration when you need dual-circuit momentary switching in a compact form factor.
