The ABB circuit breakers – meet the electric appliances’ defender

ABB circuit breakers

The company defines three groups of circuit breakers on the main website depending on the voltage applied. The first group of circuit breakers can accept less than 1000V. The medium voltage devices are able to handle up to 36000V, while the most powerful ABB circuit breakers support voltages more than 36kV. Since ABB produces an enormous amount of circuit breakers, we will provide a cursory review with information about some particular models serving as an example. Hopefully, this will let you comprehend the general concept and move on from there. Our website offers nearly all types of ABB circuit breakers, so you need to visit the main Hardware.eu page and use the Search are to find a necessary circuit breaker. Now, let’s see what ABB offers!
We have also reviewed ABB solar inverters, so you are welcome to read the next article:

Low-voltage circuit breakers from ABB

ABB works on several groups of low-voltage circuit breakers under the SACE brand name. They are designed to manage different amperage. You can order a device from the several lines that are described below.

  • The SACE Tmax XT moulded case circuit breakers.

These devices are the least powerful in the series. They can manage current rates up to 250A. Understandably, the Tmax XT CBs are small in size. There are four devices in the line, namely the XT1, XT2, XT3, and XT4. The first two circuit breakers will work with up to 160A currents, while the latter two can operate with 250A. Pay attention to the standard applied to these devices–some Tmax XT models are marked with UL489 and CSA C22.2, while others conform with IEC 60947-2.

Example: the ABB Tmax XT1 160A circuit breaker. It is available in two modifications–fixed and plug-in. The circuit breaker exists in either three- or four-pole version. The device is designed for installation on the DIN EN50022 rail. Applicable standard is the IEC 60947-2.

  • The SACE Tmax T moulded case circuit breakers.

The next step in performance from the Tmax XT line is presented by the Tmax T MCCBs. The maximum current input they accept equals 3200A. Similarly to the previous line, these circuit breakers are available in three- and four-pole versions. ABB has separated all MCCBs in five groups. Two groups join devices with two different standards, either IEC 60947-2 and CSA C22.2/UL489. The Tmax T PV group presents devices for photovoltaic installations. The MCCBs with VF mark should be used for variable frequency applications. And the last group of the Tmax T line incorporate a couple of devices with up to 1000V DC and up to 1150V AC.

Example: the ABB T4H 250 moulded circuit breaker. This is a fixed three-pole variant with terminals located in front. The MCCB will manage up to 3500V at industrial frequency for at least a minute. Maximum input amperage should not exceed 1000A.

  • The SACE Formula circuit breakers.

ABB offers only three positions, namely the Formula A1, A2, and A3. They give the possibility to handle up to 125, 250, and 630A respectively. The Formula MCCBs can work in different environmental conditions with temperatures from -25 up to +70°C. The device in the series are featured with IP40 or IP20 marks. Certainly, all Formula circuit breakers meat appropriate standards, so we will not repeat the same information.

  • The SACE Emax 2 air circuit breakers.

If your company is looking for a small yet extremely powerful circuit breaker, then the Emax 2 device with supported rated power up to 6300A may be the right choice. We should instantly mention that these circuit breakers are not cheap: The lowest current rate is 811 pounds. ABB has two product offerings with either the IEC 60947 or UL1066 standards. Emax circuit breaker models are available in four modifications, including the circuit breakers for direct current, variable frequency, and low temperature applications. The last Emax devices support nominal input voltages up to 1150V (alternating current).

Example: the ABB Emax E2N air circuit breaker. This is a four-pole version that supports up to 1000V of direct current.

Medium-voltage circuit breakers from ABB

The company develops three groups of medium-voltage circuit breakers. Some of them are available for indoor use only, while others can be installed on the outside. The last group represents railway circuit breakers. The most abundant choice is available amongst the indoor circuit breakers.

  • Indoor circuit breakers from ABB.

The group counts nine models of circuit breakers. The vacuum CBs constitute the main part of the group. As usual, ABB offers circuit breakers with different standards, such as ANSI or IEC. Pay attention to the supported voltages: each sub-group may handle only specific voltage values.

Example: the ABB Vmax vacuum circuit breaker. Such a circuit breaker uses the ABB patented EL spring system to provide around 10,000 mechanical operations. The Vmax CB is available in three versions, two of which are made in accordance with IEC standard, while the last is marked with ANSI. The devices differentiates according to rated voltage. The least powerful Vmax L/W 12 (IEC) is capable of handling 12kV. The next Vmax, namely the W 15, can work with 15kV. The last device in the line is the Vmax L/W 17.

  • Outdoor circuit breakers.

This group is nearly twice less than the previous one. You can order a device from five sub-groups. More specifically, ABB highlights such vacuum and gas circuit breakers as the R-MAG, OVB-SDB, OVB-VBF, OHB, and PVB/PVB-S series. The products with 15, 27, and 38kV of rated voltage accord with the ANSI demands, while the outdoor circuit breakers with 12, 13.2, 17.5, 24, 36, and 40.5kV correspond with the IEC standard.

Example: the ANSI / IEC R-MAG vacuum circuit breaker for outdoor use. These devices measure up in the 15-38kV range. Just like the aforementioned Vmax CBs, the R-MAG circuit breakers will endure up to 10,000 load operations. The great thing about this circuit breaker is that you don’t have to maintain its magnetic actuator. The devices are featured with a pair of control boards to deal with different voltages no matter which current–direct or alternating–is applied. The entire control board system is plug-and-play.

  • Railway circuit breakers.

You will see only three modifications of ABB railway circuit breakers. Two devices are suitable for installation on the outside, while a single one is designed to be used in the building. The devices in this line can be either single- or two-pole. The voltages applied vary depending on the railway circuit breaker model; nominal values are 17.5, 27.5 and 40.5V for the GSL II, FSK II+ and GSx Cbs.
Example: The ABB FSK II+ vacuum circuit breaker. The device combines two parts–the usual magnetic actuator and the electronic controller. Such construction allowed the company to remove (unreliable) movable components and, therefore, to create a more sturdy structure. This also puts out the need to maintain the device. Both single-phase and two-phase variations can work with up to 27.5kV, although the continuous current they can use is different. In particular, a single-phase FSK II+ works with 1250 up to 2000A, while a two-phase CB is more powerful with supported continuous current value 1600 up to 2500A.

Conclusion on ABB circuit breakers

ABB teams up a plethora of circuit breakers in three categories, including devices for low, medium, and high-voltage applications that can use both alternate and direct current. If your company needs an efficient and capable device for electrical distribution, the ABB air and moulded-case circuit breakers may certainly suit you. We recommend that you pick a device basing on the power output it will have to manage. Our website Hardware.eu offers many ABB circuit breakers at a reasonable price, which you can find on the next page. Basically, our website provides ABB circuit breakers for low-voltage applications.


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