Interlocked Receptacles: What are they used for and when are they used?
There are some conditions for which it is necessary, or even mandatory, to use interlocked industrial-use outlets, so that maneuvering a plug into or out of its socket occurs only when the outlet is off-voltage or idle.
Interlocked sockets, i.e., sockets that are associated with a switchgear connected with a mechanical lock, are used to meet these needs.
Bottom line:
- the outlet will not be able to have power if the plug is not inserted
- it will not be possible to pull the plug out if the socket is live
If your need for information about switchboards with interlocked outlets is more specific, get in touch directly with a trained SecSun technician. To get an immediate response
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The most frequently asked questions
The things that are most frequently asked about the topic are:
- When should interlocked sockets be used?
- What is the purpose of an Interlocked socket?
- When is the Interlocked socket mandatory?
How it works
The requirements for this particular type of socket are set out in IEC EN 60309-4 entitled “Plugs, fixed or movable sockets and fixed plugs for appliances for industrial use”
The function of the interlock is to prevent the possibility of the so-called electric arc phenomenon and its potential consequences occurring during the maneuver of plugging or unplugging.
The formation of electric arc, which can occur in the contact between a plug and a live socket, can lead to the emission of gases, fumes and glowing particles and cause damage to property and people, proportional to the type of environment they are in.
Switchboards with interlocked sockets are used in public places, construction sites, and machine shops.
In the range of standard terminal distribution boards(a type of item we have already covered here) SecSun offers the item:
QEPI – INDUSTRIAL USE INTERLOCKED SOCKET PANEL
This product is certified in accordance with CEI EN 61439-1/2 entitled “Low voltage switchgear and controlgear assemblies.”
The switchboard is produced already wired and has the following technical specifications:
- No. 1 Thermoplastic switchboard with transparent door
- Network input 1
- Network input 3
- No. 1 thermal-magnetic circuit breaker 6KA tripping curve C
- No. 1 Couplable differential
- No. interlocked sockets equipped with fuse holder base
Industrial use interlocked sockets
In conclusion
Industrial interlocked electrical outlets are particularly safe outlets because they have the characteristic of being able to engage or disengage the plug only when the switch is open, that is, when there is no current flowing.
Instead, in the case where there is current flowing, a locking system prevents the plug from being switched on or off to ensure maximum safety in particularly dangerous environments.
Secsun manufactures switchboards that ensure maximum efficiency and safety of the entire system, as well as ease of use. For any further, more specific information
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and send your contact request now.
