Industrial control parts supply — encoders, cables and connectors
Relays and switches are the highest-count components in any control panel — and the cheapest to stock, the most annoying to run out of. An emergency stop button that will not latch or a relay module with a burned contact can hold an entire line hostage for a part that costs a few dollars.
TGK Parts stocks the full range: interface relays and relay modules, solid-state relays, time and safety relays, plus e-stop buttons, limit switches, push buttons and selector switches in standard 22 mm panel-mount formats.
| Interface relays & relay modules | Standard 2-pole and 4-pole plug-in relays, socket bases, relay modules with LED and surge protection |
|---|---|
| Solid-state relays (SSR) | Zero-cross and random-turn SSRs, DC-AC and AC-AC, DIN rail and panel mount, 10-125 A |
| Time relays | ON-delay, OFF-delay, interval and star-delta timer relays, multi-range, DIN rail |
| Safety relays | E-stop and light-curtain monitoring relays, dual-channel with feedback loop, up to PL e / Cat 4 |
| Specialty relays | Latching, impulse, pluggable industrial control relays compatible with major OEM panel designs |
| Emergency stop buttons | 22 mm and 30 mm twist-release and key-release e-stops, IP65/IP67, 1NC+1NO and 2NC contact blocks |
|---|---|
| Push buttons & selector switches | Flush, extended and mushroom-head buttons, 2/3-position selectors, key switches, illuminated |
| Limit switches | Roller-lever, plunger and rotary types, IP67, slow-make and snap-action, with M12 connector options |
| Foot & rope switches | Industrial foot switches and emergency rope-pull switches for conveyors and long machine beds |
| Indicators & beacons | 22 mm LED indicator lamps, stack lights and sounder-beacons for panel and machine status |
| Item | Detail | Note |
|---|---|---|
| E-stop not latching | Worn latch mechanism or wrong contact block orientation | Replace latch or re-fit contact block |
| Relay chattering | Coil voltage drop >10%, loose terminal or dirty socket | Check control voltage, re-torque, clean socket |
| PLC input flickering on limit switch | Snap-action switch with contact bounce or wrong wiring type | Use appropriate contact block or add input filter |
| Safety relay will not reset | Feedback loop open or e-stop chain not closed | Trace feedback loop, check all e-stop contacts |
Every item is supplied new (sealed), tested surplus or refurbished, with the condition clearly stated before payment. In-stock items ship within 24 hours; obsolete models are sourced through our global surplus network with a quote within 12 hours. All items carry a 12-month warranty.
Safety standards require positive-opening (direct-opening) NC contacts — normally 2NC for dual-channel monitoring. Never wire an e-stop through a standard NO contact.
No — safety relays have internally redundant, monitored circuits. Standard relays cannot achieve the required performance level; we supply replacements matched to your existing relay model.
Yes — standard 35 mm DIN rail. Send us your existing module's wiring diagram or photo and we confirm a drop-in compatible replacement.