Choosing the correct industrial plug and socket is essential for electrical safety, equipment reliability and long product lifetime.
Industrial plugs are not all the same. A socket used inside a dry workshop is not necessarily suitable for outdoor installation, construction sites or humid environments.
Step 1: Identify the electrical load
The first step is to check the current required by the equipment:
| Current | Typical use |
|---|---|
| 16 A | small machines, portable tools |
| 32 A | medium equipment, workshops |
| 63 A | heavy industrial machinery |
| 125 A | high-power installations |
Step 2: Check voltage and phase
Industrial applications may require:
- single-phase supply
- three-phase supply
- neutral connection
- earth protection
Wrong selection can create unsafe connections or equipment failure.
Step 3: Choose the right IP rating
IP protection is defined by IEC 60529, which classifies protection provided by enclosures against access, solid objects and water ingress. For outdoor or dusty environments, higher IP protection is usually recommended.
Step 4: Consider installation environment
Choose products according to:
- humidity
- dust
- UV exposure
- impact risk
- temperature
- chemical exposure
- frequency of connection and disconnection
Step 5: Select certified products
Electrical products placed on the EU market must respect applicable safety requirements. The Low Voltage Directive 2014/35/EU applies to electrical equipment between 50–1,000 V AC and 75–1,500 V DC.
TRX recommendation
For professional installations, TRX recommends using industrial-grade plugs and sockets with suitable IP protection, durable materials and clear technical markings.