REC4, RECB, RECmax, RGU-10 RAL, WRU-RA LV protection devices with automatic reclosing
Country: Spain · Model: REC4 / RECB / RECmax / RGU-10 RAL / WRU-RA
Two- and four-pole RCCBs with a reclosing motor, motorized circuit breakers and RGU-10 RAL residual current relays for 0.03–30 A with an automatic reclosing function (ARF). After a false or short-term trip not related to insulation damage, the device restores the voltage by itself, and no crew is sent to the remote site.
- REC4 / REC4-C
- 2P or 4P RCCB with a built-in reclosing motor; e.g. REC4-C-2P-40-300: 40 A, 300 mA, type A; time-based reclosing; status output
- RECB
- type B versions
- RECmax MP
- motorized circuit breakers (e.g. C4-16: 4P, 16 A, curve C), remote switch-off/switch-on via O/I inputs
- RECmax CVM / LPD
- circuit breakers with reclosing and measuring/protection functions
Technical specifications
| REC4 / REC4-C | 2P or 4P RCCB with a built-in reclosing motor; e.g. REC4-C-2P-40-300: 40 A, 300 mA, type A; time-based reclosing; status output |
|---|---|
| RECB | type B versions |
| RECmax MP | motorized circuit breakers (e.g. C4-16: 4P, 16 A, curve C), remote switch-off/switch-on via O/I inputs |
| RECmax CVM / LPD | circuit breakers with reclosing and measuring/protection functions |
| RGU-10 RAL | residual current relay 0.03–30 A with programmable reclosing, works with a contactor |
| WRU-RA | relay with a built-in current transformer, programmable number of reclosing attempts |
| Power supply | 230 V~ ±20 %, 50/60 Hz, 4.5–6 VA |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The device analyses the situation after a trip, and in case of a persistent fault, after the set number of attempts, it locks out and signals. REC4 and RECB combine an RCCB with an intelligent motor and are installed like an ordinary RCCB, without a separate connection between the motor and the breaker. Reclosing is time-based, a mode selector chooses manual control or ARF, and REC4-C reports through the status output that the attempts have been used up. For example, REC4-C-2P-40-300 has 2 poles, 40 A, 300 mA, type A, a 230 V~ ±20 % supply, 6 VA consumption and category CAT III 300 V. Motorized RECmax MP, such as MP-C4-16 (4 poles, 16 A, curve C), protect against short circuit and overload and are controlled remotely through the dry contact inputs O and I. The super-immunized relays RGU-10 RAL and WRU-RA of type A with a programmable reclosing cycle work together with a contactor or a motorized breaker; in WRU-RA the current transformer is built in.
How to choose
Start from the device that is installed in the panel. In place of an ordinary RCCB, install REC4 with type A or RECB with type B, and for electric vehicle charging station lines there are REC4-EV and RECB-EV. If short-circuit protection and remote commands are needed together with ARF, take RECmax MP, and measurement is added by RECmax CVM and RECmax LPD. Where the line is already switched by a contactor, an RGU-10 RAL or WRU-RA relay is enough, and the same RECmax MP can serve as the actuating device for them.
Request a price and lead time
REC4, RECB, RECmax, RGU-10 RAL, WRU-RA LV protection devices with automatic reclosing. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How does an RCCB with ARF differ from an ordinary RCCB?
The built-in motor of REC4 recloses the RCCB without staff involvement, and in case of a persistent fault, after the set number of attempts, the device locks out and does not switch the line on again.
What power supply do REC4-C and RECmax MP need?
REC4-C is powered from 230 V~ ±20 % and consumes 6 VA, RECmax MP works from 230 V~ ±30 % at 4.5 VA, and the mains frequency is 50/60 Hz.
How is the RECmax MP motorized breaker controlled remotely?
A command to input O switches the breaker off, to input I switches it on again, and two outputs transmit the status and the cause of the trip (switch-off, manual control or test).
Where is it advisable to install automatic reclosing devices?
On outdoor lighting, ATMs, traffic lights, alarm systems, garage doors, cold rooms and refrigerators, air conditioning, UPS, telecommunication and pumping units and critical production processes.
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