Altronix RB5 5A DPDT Relay Module
The Altronix RB5 is a compact relay module purpose-built for low-voltage switching in security infrastructure — specifically access control systems, door lock controllers, and alarm signal routing. It operates on either 6VDC or 12VDC input and delivers 5-ampere switching across dual-pole dual-throw (DPDT) contacts, allowing you to control loads up to 115VAC or 28VDC. This enclosure-ready form factor integrates directly into control panels and power distribution assemblies without requiring external mounting infrastructure.
Key Features
- Dual Input Voltage Support (6VDC or 12VDC): Eliminates the need for separate relay modules across different voltage tiers in your control architecture — one part covers both low-voltage rails commonly found in access control and alarm systems.
- 5-Ampere Switching Capacity: Handles door strike plates, magnetic locks, gate operators, and relay banks without undersizing. At 5A, you stay well clear of relay chatter and marginal load conditions that shorten mechanical life.
- DPDT Relay Configuration: Two independent pole pairs let you switch separate circuits (e.g., lock and door sensor circuits) from a single control signal, or configure changeover logic without adding a second relay module.
- Output Voltage Flexibility (115VAC or 28VDC): Support for both alternating and direct current outputs means the RB5 works across mixed-voltage environments — typical in facilities running legacy 24VDC access control alongside 120VAC solenoid gates.
- Compact Panel Enclosure Form Factor: Mounts directly into standard control cabinets and power distribution boxes. No external bracket or relay base required — reduces panel real estate and simplifies wire routing.
- Lifetime Limited Warranty: Altronix backs the unit for the life of the product under normal operating conditions, protecting your installed base from early relay failure.
Integration & Compatibility
The RB5 integrates into any access control system that generates a 6VDC or 12VDC control signal — this includes hardwired panels, distributed controllers, and IP-based access management platforms. Since the relay operates on standard voltage rails, there are no proprietary interfaces or software dependencies. Wire the input to your control logic, connect your load to the output terminals, and the relay responds immediately to voltage presence. This straightforward electromechanical operation also means the RB5 requires no programming, firmware updates, or VMS integration — a real advantage in systems where you need deterministic switching without network latency.
Deployment is common in power infrastructure architectures where relay modules manage switching loads across multiple circuits. Consider the RB5 part of a broader Altronix power and control ecosystem that includes power supplies, distribution modules, and backup power systems.
When to Choose a Different Model
If you need higher switching current (above 5A) or three or more independent circuits from a single relay, evaluate higher-amperage or multi-relay variants within the Altronix relay family. If your application requires AC input voltage sensing or AC-driven coil operation, confirm input/output voltage requirements against your control architecture before ordering. The RB5 is designed for control signal switching; it is not suitable for power distribution main feeds or high-inrush motor loads.
Frequently Asked Questions
Q: Can I use the RB5 with a 24VDC input?
A: No. The RB5 input is rated for 6VDC or 12VDC operation only. Do not apply 24VDC to the coil — it will damage the relay.
Q: What's the maximum load current the RB5 can switch?
A: 5 amperes. This applies to both 115VAC and 28VDC output circuits. Verify your load current before installation.
Q: How do I mount the RB5 in a control panel?
A: The RB5 enclosure mounts directly into standard DIN rails or bolts into cabinet wall panels using the provided mounting points. Refer to the product datasheet for exact mounting hole dimensions.
Q: Does the RB5 have surge protection on the output?
A: The relay contacts are mechanical — no integrated surge suppression. If switching inductive loads (solenoids, motors), install a diode or varistor across the load coil to suppress back-EMF and protect the relay contacts.
Q: What is the lifetime of the RB5 relay contacts?
A: Mechanical relay life depends on load type and switching frequency. Resistive loads typically support millions of cycles; inductive loads (without suppression) degrade contact life significantly. For high-cycle applications, confirm switching frequency and load class with Altronix support.
Q: Is the RB5 suitable for outdoor installations?
A: The RB5 is an enclosure-mounted module designed for panel use. If exposed to weather, install it inside a NEMA-rated cabinet rated for your climate zone.
Jerry TildsenPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The Altronix RB5 is a straightforward relay workhorse for access control and alarm signal routing. It's not flashy, but the dual voltage input (6VDC or 12VDC) and DPDT switching make it genuinely practical in hybrid legacy/modern installations where you might be interfacing with both older hardwired panels and newer distributed control logic. The 5-ampere rating is adequate for door strikes, magnetic locks, and moderate solenoid gates — but only if you suppress back-EMF on inductive loads.
Technical Highlights:
- 5-Ampere DPDT Switching: Two independent pole pairs let you manage separate circuits from a single control signal. No need to wire parallel contacts or add external relay logic. Each pole can carry the full 5A, so you're not robbing amperage from one circuit to feed another.
- 6VDC or 12VDC Input Flexibility: Many control panels run either voltage depending on the subsystem. One RB5 part number eliminates inventory fragmentation — a real cost advantage in multi-site deployments where standardization reduces spare parts overhead.
- 115VAC or 28VDC Output Support: Legacy 24VDC solenoids and modern 120VAC gate operators can both be controlled from the same relay module. This is critical in retrofit scenarios where you're upgrading access control without replacing every field device.
Deployment Considerations:
- Back-EMF Suppression Required on Inductive Loads: If you're switching a solenoid lock or gate motor, the RB5 has no built-in surge protection. Install a 1N4007 diode (for DC) or MOV (for AC) across the load coil to prevent contact arcing and premature relay failure. This is a field-proven best practice, not optional.
- No Network Intelligence: The RB5 is pure electromechanical relay — no status reporting, no diagnostics, no IP connectivity. If you need to monitor relay state or log switching events remotely, you'll have to add a separate sensor circuit or control module upstream. This is fine for deterministic security logic, but understand the limitation before specifying it into a fully networked access control system.
Position the RB5 for hardwired access control panels, distributed door lock controllers, and alarm signal routing in facilities that need reliable, low-latency switching without network dependencies. It's especially valuable in multi-building campuses where you want local fail-safe operation independent of VMS or IP infrastructure.
