Warranty
Industrial relays that make the difference
Reliable relay performance where conventional relays fail
Delcon relays use pulse transformer technology to deliver exceptional noise immunity, true switching reliability and long service life in demanding environments. This pulse transformer approach is unique in the relay market and used exclusively by Delcon.
No false triggering
Ultra-low capacitance keeps long cables and noisy signals under control.
Handles inductive loads
Robust switching of solenoids, brakes and valves – often without external protection.
High inrush current capability
Handles extreme inrush peaks reliably, ensuring stable switching without oversizing.
Long lifetime
No mechanical wear, high reliability and long service life.
Industries
Built for demanding industrial conditions
From paper machines to hydropower, Delcon relays solve real-world challenges.
Pulp & Paper
Long cables, high EMI, continuous operation
Cranes & Ports
Brake control, solenoids, high and heavy duty
Energy & Hydropower
110 VDC systems, harsh conditions, high uptime
Marine & Offshore
Corrosion, vibration, reliable switching
Rail
Rolling stock, doors, noisy environments
Process Industry
Process control, demanding loads
Compare and see the difference
Why Delcon is a better choice
In difficult industrial conditions, technology matters. Delcon outperforms standard solutions in noise and inductive loads.
View full comparison| Feature | Delcon Pulse Transformer Relay | Optocoupler Relay | Mechanical Relay |
|---|---|---|---|
| Noise Immunity | ✓ ✓ ✓ | ✓ | ✓ |
| Leakage Current / Ghost Voltage | ✓ ✓ ✓ | ✕ | ✓ |
| Handles Inductive Loads | ✓ ✓ ✓ | ✕ | ✕ |
| Lifetime | ✓ ✓ ✓ | ✓ | Limited (wear) |
| Suited For Long Cables | ✓ ✓ ✓ | Sometimes | ✓ |
How it works
Pulse transformer technology explained
Delcon relay electronics first converts the control input into precise pulse packets. Those pulses are sent magnetically through a pulse transformer and then rebuilt into strong output drive energy.
Because energy crosses the barrier as magnetic pulses instead of direct electrical contact, the input and output stay galvanically isolated. This is why Delcon relays remain stable in high-noise industrial environments.
Learn moreSignal
PLC or sensor command
Generator
Signal shaped to pulses
Transformer
Magnetic energy transfer + isolation
Driver
Stable switching power
Products
Relays, accessories & selection
The full Delcon range, the interactive relay selection tool, and search filters — on the Products page. Datasheets and orders use the official delcon.fi product pages.
Work with Delcon
Tell us about voltage levels, load type and environment. We help you select the right Delcon relay and provide a formal quotation.