Purchase now: Kuhnke FA2.12VDC Industrial Relay
Purchase now: Atlantechdrives provides you the FA2.12VDC, a high-performance industrial supply relay engineered by the electromechanical specialists at Kendrion Kuhnke. This 12V DC relay is a fundamental component for control cabinet builders and OEM manufacturers who require reliable signal switching and electrical isolation. Designed for long-term durability, the FA2 series is optimized for low-voltage DC applications where high contact reliability and rapid switching times are non-negotiable. The FA2.12VDC acts as a safe interface between a controller’s output and much larger electrical loads, preventing sensitive electronics from being exposed to damaging feedback or high currents. Its robust internal design features silver-alloy contacts that provide superior conductivity and resistance to oxidation, ensuring that the electrical circuit remains stable even after thousands of cycles. Whether you are automating a localized production cell or integrating a safety interlocking circuit, this Kuhnke relay offers the German-engineered precision required for 24/7 industrial operations.
Technical Specifications of the FA2.12VDC
- Part Number: FA2.12VDC
- Manufacturer: Kendrion Kuhnke
- Coil Voltage: 12V DC
- Contact Configuration: Typically DPDT (Double Pole Double Throw)
- Mounting: Plug-in or PCB mount compatible
- Insulation Resistance: High-grade dielectric material
- Switching Current: Up to 10A (Depending on load type)
Expert Tips: Managing Voltage Drop in 12V DC Circuits
Working with 12V DC systems presents a unique challenge: voltage drop. Expert Tip: Because the voltage is lower than standard 24V or 120V systems, the resistance in long wire runs can significantly decrease the voltage reaching the FA2.12VDC coil. If the voltage drops below 10.5V, the relay may chatter or fail to pull in, leading to intermittent faults and contact arcing. Always place the relay as close as possible to the power source or use thicker gauge wiring for long runs to ensure a solid 12V DC signal reaches the coil every time.
Installation Advice: Protecting the Coil from Flyback
When the FA2.12VDC is de-energized, the magnetic field in the coil collapses, creating a high-voltage inductive spike. To protect your PLC or control circuit, it is highly recommended to install a freewheeling diode (flyback diode) in parallel with the coil terminals. This safely dissipates the energy and prevents the surge from traveling back through the control wires and destroying sensitive semiconductor components.
Frequently Asked Questions (FAQs)
Q: Can the FA2.12VDC be used with a 12V AC power supply?
A: No. This model is strictly designed for DC (Direct Current). Applying AC voltage will cause the relay to vibrate (chatter) at the line frequency and will eventually burn out the coil due to excessive heat generation.
Q: What is the expected mechanical life of this relay?
A: Under standard operating conditions and without excessive contact arcing, the FA2 series is designed for over 10 million mechanical cycles. However, electrical life depends heavily on the type of load being switched.
Do you need more references from this brand? Explore our full catalog of Kuhnke here.
This coil is frequently deployed with the IA4.24VDC indicator from the Kuhnke IA series, both designed for compact valve manifold assemblies where low-voltage actuation and visual status feedback are required simultaneously.
