Electrical Connector Form A LED VDR PG9 IP65

Description

EN 175301-803 (DIN43650A) square electrical connector 2 pin + earth with Red LED + VDR for solenoid valves

Connection: DIN ISO4400 Form A DIN 43650A 28mm square
Voltage: 24, 110 or 230 volt
Current: 1 Amp maximum
Design: standard 2 Piece Black Polyamide PA6 GF30 housing with clear cover
Circuit: RED LED and VDR varistor with bipolar circuit protection, option Yellow or Green LED.
Drop off delay: 3mSec Max
Power consumption: 5mAmp Maximum Resistance, 4 mOhm maximum.
Conduit entry: PG9 (cable 6 to 8mm) or M20x1.5mm with grommet removed
Seals: NBR LABS-free 6 Grommet, gasket and cover gasket, max Wire Connection: clamping contact Wire 0.5 to 1.5mm, with wire protecting plate.
Resistance: 4 mOhm Max.
Position: ground (Earth) position 12h (can be adjusted to 3h, 6h or 9h),
Central fixing screw: steel 4.8 zinc plated
Contacts: CuZn, Sn/Cu plated
Temperature: -25°C to +125°C
Circuit 03

2022 PCB adjusted to the new terminal block, LED will be SMD,
24v 611-201-0152
110v 611-201-0153

In order to establish a suitable electrical connection, the use of ferrules for fine stranded cables are mandatory. Be aware that the wire (conductor) cross-section affects the maximum current load (Amp) capacity.

A VDR (Voltage Dependent Resistor), also known as a varistor, is used in electrical circuits to protect components from voltage spikes or surges. When incorporated into a solenoid valve's circuit, the VDR helps protect the solenoid coil from transient voltage spikes that can occur when the coil is de-energized.

Here's how it works:

Surge Protection: When the solenoid valve is turned off (de-energized), the magnetic field that was generated by the coil collapses rapidly. This collapse can induce a high-voltage spike (also known as a back EMF or inductive kickback) across the coil. The VDR, being sensitive to voltage, will conduct current when this voltage exceeds its threshold, thereby clamping the spike and protecting the rest of the circuit.

Voltage Clamping: The VDR has a non-linear resistance characteristic. Under normal operating voltages, it has a high resistance, effectively acting as an open circuit. However, when a voltage spike occurs, the resistance drops sharply, allowing the VDR to absorb and dissipate the excess energy, thus preventing damage to the solenoid coil or other components.

Longevity of Components: By protecting against these spikes, the VDR helps increase the lifespan of the solenoid coil and any associated control electronics by preventing excessive voltage from reaching them.

In summary, a VDR in a solenoid valve circuit functions as a protective device to prevent damage from voltage spikes, ensuring the reliable operation and longevity of the valve and its control circuitry.

Technical Specification