NTE Electronics R04-11A30-120 Series R4 General Purpose Multicontact AC Open Frame Relay, Heavy Duty, DPDT Contact Arrangement, 30 Amp, 120 VAC
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There is no cover included with the relay.
I'm not sure what the 5x846E relay is for, but it's a 120V coil.
I've been using these for years, and the longest they've ever been charged is 72 hours. As a result, yes, it could be energized in the long run. br>I'd rewire the circuit so that the n is used. However, for a six-month period, contacts were made.
This relay was used for automatic transfer and had to be properly wired.
Selected User Reviews For NTE Electronics R04-11A30-120 Series R4 General Purpose Multicontact AC Open Frame Relay, Heavy Duty, DPDT Contact Arrangement, 30 Amp, 120 VAC
I purchased this relay to use in my truck as an automatic transfer switch between shore power and the onboard inverter. I connected the inverter to the normally closed terminals so that the relay would not consume any additional power while the battery was being used. When external AC is connected, the inverter is disconnected because shore power is connected to the normally open terminals as well as the coil. The common terminals are connected to the truck's breaker panel. This relay appears to be sturdy and well-made. I put it in a plastic box (Amico 160mm x 110mm x 90mm Waterproof Plastic Enclosure Case DIY Junction Box) that fit perfectly and had enough room for three 10-volt batteries. 3 Romex cables (stranded boat wire; solid wire may be difficult to bend in this small space). I used crimp rings as a finishing touch. To make all of the connections, you'll need tongue terminals.
Junk! This relay was ordered in July 2015 for a shorepower/inverter auto transfer switch on a sailboat. Just installed and discovered two issues: first, the 60hz coil hums/vibrates through the fiberglass, which is quite noticeable with everything else off in the boat! The second problem was that one of the 30A lugs' rivets was loose, resulting in an intermittent connection! br>br>If you're willing to put up with 60hz hum and take a chance on QA, this might be worth a shot; otherwise, pass. br>br>Another point to consider - Plain steel rivets hold plated copper in place. Another long-term point of failure in the presence of saltwater, which I had already made a Lexan cover for but had not yet installed. br>br>At this point, I'm going to use a manual switch.
This relay is well-made and durable. I used it to create an auto-repair system. a transfer switch for a small bumper truck belonging to a friend towing a travel trailer It alternates between a 2kw inverter and a 120v 15/20/30A RV pedestal. It is rated for a constant duty cycle. When it energizes, it makes an audible click, but it's not loud, and there's no hum. Its approximate dimensions are 2 feet by 2 feet by 2 feet by 2 feet by 2 feet by 2 feet by 5x3. 5x2" (LWH), but if you're installing in a tight space, you'll need to allow a little more room for wiring, e. g. , and an electrical box br>br>For this application, it was ideal.
Like the small size, it can be installed in a breaker panel and is used for generator backup and automatic transfer. Screw connectors are not suitable for solid wire and are only suitable for spade lugs. They don't have a clamp that can tighten around two conductors like regular clamps. I used the relay in the normal closed contacts and energizing it during a power outage with generator power, and it has a slight buzz to it; I'm not sure if it will get worse over time.
I used this relay as a commercial cooking hood fan activation and electrical outlet cutoff fire protection relay, and it appears to be performing well. However, I strongly advise you to request additional packing material to be placed inside the bubble mailer envelope into which the relay's factory box is simply dropped. This shipper has previously delivered broken relays to other reviewers, so be cautious. I'm lucky because mine arrived without a blemish. Great relay at a reasonable price; if they are not sold out, I will likely order more.
RV use. Over the N, I measured a 34 mV drop. to common contacts, with a total current of 13 amps. This is acceptable and meets or exceeds my expectations. I used this, as have others, as a so-called automatic transfer switch for the RV's shore line and inverter. It really works.
I built a custom transfer switch for my 5th wheel so I could have a power inlet under the tongue that I could plug into the generator in the truck's bed without having to run a cord back 20 feet to the main inlet. Allows me to keep the generator connected while on the road without having to fiddle with the cord.
Since 2014, I've had three of these running in my electric brewery, and they've all performed admirably. When they're turned on, there's a pleasing audible click.
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