Where can I find modules/plugs for single-pole overcurrent circuit breakers?

Question

Hello all. I have a question i.e. Are there any modules/capacitors for single-pole simplest overcurrent circuit breakers ? I am concerned with monitoring the status of such circuit breakers while in the second iteration being able to control them (on/off). Such overlays/modules would make it...

Shadowix · Accepted Answer

. People, finally understand that an overcurrent circuit breaker is not for switching or switching circuits but for protecting them! Relays and contactors are for control! Don't mix up overcurrent triggers, as they also have a different role on the net.... . Such austerity only breeds further problems; it is better to get down to something decent and ethical straight away.

juan cabrillo · Answer

Type auxiliary contact into your goggle. Almost every accessory manufacturer has this on offer.

Plumpi · Answer

. There are so-called NO/NC auxiliary contacts and voltage tripping devices for tripping overcurrent circuit breakers, which are mounted next to the circuit breaker. They have a lever and a metal stick that mechanically connects the circuit breaker lever to the auxiliary contact lever or the trip. Voltage triggers come in two types as rise and fade. Auxiliary contacts as well as triggers are often used in industrial automation systems. But I have not heard of switching devices.

boe6666 · Answer

Thanks for the reply, I'll keep looking. It's a pity there are no such devices - you could easily incorporate existing switchgear and circuits into control systems....

xury · Answer

There are automatic switches including auxiliary contacts. I have seen such in BTSs.
Unfortunately I can't remember which company they were. Mounted next to the overcurrent switch with a pin that lifted the latch upwards.

sebek3 · Answer

Of course there is such a thing. Here is an example from Aliexpress .

CYRUS2 · Answer

Contactor, relay can't ? Monitoring by means of free contacts. Or with systems that monitor the voltage at the outputs. I did it on the INTEGRA control panel.

blady1k9 · Answer

As CYRUS2's colleague writes - the overcurrent circuit breaker is not for this.
A situation may arise where you try to re-connect a circuit in which there is a short circuit.
It is better to use a relay/contactor.

boe6666 · Answer

Activation of the overcurrent circuit breaker in the event of a short circuit is impossible. Contactors and relays are ok but there is not always room. In addition, this is a rather expensive solution for bistable.

jozgo · Answer

I remember that F&G had it but after EATON went in it disappeared somewhere. It was something like this:

raffin · Answer

. Instead of observing the position of the lever, you can test the voltage in the circuit. I sometimes use such phase presence controllers from Ropam for control panels, even works well: galvanic separation of sides on optocoupler. The cost is ridiculous, about ~£19

CYRUS2 · Answer

This takes up the least amount of space. If you don't have space for it, you won't do anything.

boe6666 · Answer

And who is talking about control? after all, we are not going to argue about nomenclature. An overcurrent circuit breaker has a handle and therefore allows the circuit to be switched on and off - it has been so designed, tested and verified. Personally, I imagine a building that has a P/T installation and a switchboard that is already full. In such a situation there is no possibility of simply fitting relays or contactors. Such overlays would allow circuits to be switched off and on without interfering with the switchgear. I found something like this:

Where can I find modules/plugs for single-pole overcurrent circuit breakers?

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