Utility Relay Company (URC) is a leading manufacturer of solid state micro-controller based true RMS trip units for both AC and DC power circuit breakers. URC prides itself on the quality of the products, exceptional customer service, and manufacturing in the USA for over 25 years.
We support original equipment manufacturers (OEM’s) like GE as well as non-OEM companies with upgrade kits so that they can perform low voltage breaker service as part of their life extension programs. URC calls this community our “circuit breaker retrofit partners.”
Most OEMs constantly discontinue trip units, but URC has provided a stable trip unit platform for over 25 years. URC understands that customers have choices on what company and trip units to use, but we truly believe that the AC-PRO®; family of trip units that we offer are the best. URC's family of products are superior in both features and quality of construction. If you are looking for a replacement trip unit for the RMS9, MVT, MVT+, Power+, MicroVersaTrip+, or the MicroVersaTrip M/PM, chose the AC PRO Family of trip units and partner with Utility Relay.
Please review the side by side comparison of the AC-PRO-II® and GE's EntelliGuard TU. As you will see, URC wins most categories but not all. However, the additional features that the AC-PRO-II® offers, such as no rating plugs, and the fact URC is a USA manufacturer for over 25 years offering exceptional products, exceptional service, and fast delivery will outweigh what the competitor has to offer. Below is a chart comparing the AC-PRO-II®; and the EntelliGuard TU to help explain why the AC-PRO-II®; is the best option.
URC typically ships in 1-2 days after an order is received. URC products are made and shipped right here in Chagrin Falls, Ohio which makes URC a proud USA Manufacturer able to customize products for your specific needs.
URC has dedicated itself to provide industry leading technology and service to the switchgear community. Over the last 25 years URC has remained committed to the success of those companies that provide switchgear service. During that same time Original Equipment Manufacturers (OEM’s), like GE and others, have abandoned and discontinued support for their own products. These end of life OEM decisions cause support issues for the industrial manufacturing community. Both US and oversea manufacturing facilities were not built on the idea that they would go away after 20 years of use. Why should they partner with short-sighted solution providers?
At a glance:
Sept. 2017 GE sells off its Industrial solutions business unit to ABB.
ABB stated [GE’s Industrial Solutions] had been "an unloved child" pledging to
upgrade aging products with its own technology while at the same time building a new LV circuit breaker manufacturing plant.
The EntelliGuard product line is in jeopardy.
GE’s CEO, John Flanery divested non-core assets including sectors involved with Entelliguard
ABB Emax2 / GE EntelliGuard product overlap.
GE stopped development of new retrofit kit designs.
Future of investments in the GE platform is unknown
Continued Customer support for their limited portfolio is unknown
VS URC's Value Proposition
25 years of commitment in Low Voltage breaker support.
Engineering staff that is both seasoned and growing to support expansion and product development.
Thousands of kits available for all popular OEM brands.
Same / Next day shipment of orders.
24/7 access to customer service. Mech. & Electrical Engineering support.
Ongoing heavy investments in products and kit development.
MAINTENANCE REQUIRED WARNING
URC's patented Sluggish Breaker®; is the method for documenting the condition of the breaker mechanism. The patented Sluggish Breaker®; detection feature captures the breaker mechanism opening time when a trip occurs that was initiated by the trip unit. If the breaker mechanism time is in excess of the Sluggish Breaker®; mechanism opening time setting, an alarm message will appear, and if programmed, the alarm relay will operate.
This patented detection systems measures the breakers opening speed on every trip operation including the critical first operation. It provides actual time values for the breaker service test report.
On the AC-PRO-II®;, the Sluggish Breaker®; threshold is user programmable from 20-80 milliseconds.
Compatible URC products with the Sluggish Breaker®; detection system are the AC-PRO-II®;, AC-PRO-MP®;, and the SAFE-T-TRIP®;. To learn more about the Sluggish Breaker®; detection system, contact URC at 888.289.2864 or at URCSales@UtilityRelay.com.
REMOTE TRIP CAPABILITY
Reduce arc flash risk and determine if the breaker mechanism needs service with the SAFE-T-TRIP®; device. The SAFE-T-TRIP®; device provides a means for an operator to trip (open) a circuit breaker without standing directly in front of the breaker while it opens. This added distance front of the breaker reduces the arc flash risk to the operator.
The SAFE-T-TRIP®; is powered by a 9-volt battery that will power up the trip unit and initiate a trip even if there is no power coming to the trip unit from CTs or an external power source. The battery is very easy to change using the battery access door on the front of the unit. There is also a "Battery OK" LED indicator that notifies the user when the battery is reaching the end of its useful life.
All of the URC trip units that are compatible with the SAFE-T-TRIP®; also have the patented Sluggish Breaker®; detection system. Sluggish Breaker®; detection determines if the breaker mechanism needs service as indicated by slow operation during the first trip. Later operations are faster because the breaker mechanism was exercised. The SAFE-T-TRIP®; device can be used to initiate the first trip before racking out a break. When the trip unit
initiates a breaker trip, it measures the time between triggering the actuator and when the contacts are open. If this time is greater
than the threshold setting, the Sluggish Breaker®; alarm is set. If the Sluggish Breaker®; alarm was set, that is an indicator that the breaker mechanism should be serviced.
As you can see in the chart above, URC offers over 4,500+ kits. The reason this is such a plus is that you can purchase one trip unit that fits into multiple breakers. That means you will only need one test set, only have training held for one trip unit, have one set of tools, and deal with one manufacturer. URC wants to make it as easy and as fast as possible for the retrofitters to do their job. If there is only one trip unit that is needed to know, it will cause less confusion and faster assembly time as well as quicker repairs.
URC has created a kit ordering system that will identify the specific kit you are looking for that contains all the parts you need for the retrofit, except the tools. If you visit the Kit Ordering Guide (KOG), it will take you through a series of questions to lead you to what you are looking for. If you prefer to speak with a customer service representative, they can be reached at 888.289.2864 or at URCSales@UtilityRelay.com.
UL LISTED ON A VARIETY OF BREAKERS
To ensure that the AC-PRO-II®; will function when needed it was tested to the ANSI C.37.59 Standards for fault interruption. As a result of this testing, the AC-PRO-II®; is UL listed on a variety of breakers.
There's more to the reality of UL listing of retrofit kits on Low Voltage Power Circuit Breakers. For further information please read our in-depth writeup.
The SAFETY US-CA wording on the UL label designates that our product has been evaluated to United States and Canadian safety requirements. If you have more questions about this please visit the UL website for more details. UL-Marks for North America
The E number at the bottom of the mark is a unique identifier that can be used to access more information about the products UL certification. Information about Utility Relay Company's E number can be found here: UL AC-PRO®; Product Family
The AC-PRO-II®;, which is 55% smaller than the AC-PRO®;, is a solid state, true RMS sensing overcurrent device for use on low voltage AC breakers. It has the standard trip unit functions of Long-Time, Short-Time, Instantaneous, and Ground Fault. The AC-PRO-II®; also includes neutral overload and other features such as our patented Sluggish Breaker®; detection, RS485 communications port with ModBus protocol, time stamping of events, wave form capture, and configurable alarm relay. Also, to ensure that the AC-PRO-II®; will function when needed, it was tested to the ANSI C.37.59 standards for fault interruption.
As a result of this testing, the
AC-PRO-II®; is UL listed on a variety of breakers.
The AC-PRO®; trip unit is a solid state, true RMS sensing overcurrent device for use on
600 volt class circuit breakers.
The AC-PRO®; comes standard with Long-Time, Short-Time, Instantaneous, Ground Fault, and Phase Unbalance protections as well as optional RS485 communications port with ModBus protocol. Each of these protective features can be turned on or off at any time except for Long-Time. The units do not use ratings plugs and have a programmable CT rating. These features allow one unit to be used in a wide variety of different breakers. Along with the ability to be used with numerous breakers, the AC-PRO®; is UL listed on a variety of breakers as well.
Dramatically reduce arc flash potential for those times when you must work on energized downstream equipment by using QUICK-TRIP®;. The QUICK-TRIP®; system is a manually controlled arc flash reduction system. It can reduce trip times when turned on and allows selective coordination between circuit breakers when turned off. If maintenance personal must work on energized equipment, they will first turn the QUICK-TRIP®; system on at the breaker feeding the equipment. If a fault occurs, the upstream breaker will trip quickly based on the QUICK-TRIP®; settings reducing the arc flash hazard to personnel.
*Note: Older AC-PRO®; trip units can be easily upgraded to include QUICK-TRIP®; capability. Contact URC at URCSales@UtilityRelay.com or 888.289.2864 for details.
Reduce arc flash risk and determine if the breaker mechanism needs service with
the SAFE-T-TRIP®; device. All of the URC trip units that are compatible with the SAFE-T-TRIP®; device also have the patented Sluggish Breaker®; detection system. Sluggish Breaker®; detection determines if the breaker mechanism needs service as indicated by slow operation during the first trip. The SAFE-T-TRIP®; device provides a means for an operator to trip (open) a circuit breaker without standing directly in front of the breaker while it opens. This added distance from the breaker reduces the arc flash risk to the operator. This hand held device has a control panel and comes with a 5 meter USB cable. The SAFE-T-TRIP®; is compatible with the AC-PRO-II®; and the AC-PRO-MP®;.
Learn more about the protection the SAFE-T-TRIP®; can bring the worker on the product page.
Utility Relay Company (URC) is a leading manufacturer of solid state micro-controller based true RMS trip units for both AC and DC power circuit breakers. URC prides itself on the quality of the products, exceptional customer service, and manufacturing in the USA for over 25 years.
URC's patented Sluggish Breaker®; is the method for documenting the condition of the breaker mechanism. The patented Sluggish Breaker®; detection feature captures the breaker mechanism opening time when a trip occurs that was initiated by the trip unit. If the breaker mechanism time is in excess of the Sluggish Breaker®; mechanism opening time setting, an alarm message will appear, and if programmed, the alarm relay will operate.
To ensure that the AC-PRO-II®; will function when needed it was tested to the ANSI C.37.59 Standards for fault interruption. As a result of this testing, the AC-PRO-II®; is UL listed on a variety of breakers. 
The SAFETY US-CA wording on the UL label designates that our product has been evaluated to United States and Canadian safety requirements. If you have more questions about this please visit the UL website for more details. 
