(855) 355-2724
The ABB A26-30-10 is a 3-pole A-Line AC contactor with one normally open auxiliary contact. BRAH Electric’s replacement is the BA26-30-10: a 3-phase contactor with a catalogue rating of 28A at 600V, listed for 10HP at 240V, 20HP at 480V and 25HP at 600V, and supplied with a 120VAC coil. Eight more BRAH listings cover the same contactor with other coil voltages, from 24VAC to 500/600VAC.
The quickest way to the right one is to read the full ABB number from the nameplate and put a B in front of it. This guide lists every A26-30-10 variant BRAH carries, shows the sizes on either side of it in the A-Line family, and sets out what to check before you order.
A26-30-10 replacement at a glance
- A26-30-10 becomes BA26-30-10. A26-30-10-84 becomes BA26-30-10-84. The rule holds for every A-Line contactor in the BRAH catalogue.
- All nine listings are 3-pole, 600V, with a catalogue rating of 28A and one normally open auxiliary contact. Only the coil differs.
- The two digits at the end of the ABB number identify the coil voltage. With no suffix, the BRAH part has a 120VAC coil.
- BRAH also lists add-on auxiliary contact blocks for the A26. Browse the full range under replacement contactors.
- BRAH Electric is an aftermarket manufacturer. Its catalogue marks the ABB A26-30-10 part numbers as obsolete.
What the A26-30-10 is
A contactor is an electrically operated switch. A control circuit energizes its coil, the coil closes three main contacts, and those contacts connect a motor or other three-phase load to the supply. When the coil is de-energized, springs open the contacts again. The A26-30-10 is one size in ABB’s A-Line range and is found in motor starters, usually with an overload relay connected to its load terminals.
In the BRAH catalogue the three parts of the number line up with the listing as follows. A26 is the size. Every -30-10 listing in the A-Line family has three main poles and one normally open auxiliary contact. The auxiliary contact switches control current only, and it is typically used as the holding contact in a start/stop circuit.
The size name is not the current rating. The catalogue rating of the BA26-30-10 is 28A, and BRAH’s horsepower figures for it are 10HP at 240V, 20HP at 480V and 25HP at 600V, three-phase. Treat these as catalogue values. Size the replacement from the nameplate of the contactor you are removing and from the motor nameplate.
BRAH replacements for the A26-30-10, by coil voltage
Each row is a separate BRAH listing. All are 3-pole (3P), 3-phase and rated 600V. The horsepower column is the catalogue value at 480V.
| BRAH part | Replaces ABB | Coil voltage | Amperage (catalogue) | Horsepower at 480V (catalogue) | Auxiliary contacts |
|---|---|---|---|---|---|
| BA26-30-10 | A26-30-10 | 120VAC | 28A | 20HP | 1 NO |
| BA26-30-10-84 | A26-30-10-84 | 120VAC | 28A | 20HP | 1 NO |
| BA26-30-10-81 | A26-30-10-81 | 24VAC | 28A | 20HP | 1 NO |
| BA26-30-10-83 | A26-30-10-83 | 48VAC | 28A | 20HP | 1 NO |
| BA26-30-10-80 | A26-30-10-80 | 220/240VAC | 28A | 20HP | 1 NO |
| BA26-30-10-42 | A26-30-10-42 | 277VAC | 28A | 20HP | 1 NO |
| BA26-30-10-51 | A26-30-10-51 | 480VAC | 28A | 20HP | 1 NO |
| BA26-30-10-86 | A26-30-10-86 | 415/440VAC | 28A | 20HP | 1 NO |
| BA26-30-10-55 | A26-30-10-55 | 500/600VAC | 28A | 20HP | 1 NO |
The listing without a suffix and the -84 listing both have a 120VAC coil. All of these are AC coils. For anything not in the table, call (855) 355-2724 with the part number.
Add-on auxiliary contacts listed for the A26
If the old contactor has extra auxiliary contact blocks fitted, for an interlock or a status signal, they can be carried over or replaced. The BRAH catalogue lists these blocks for A-Line contactors including the A26. The full listing is under auxiliary contacts.
| BRAH auxiliary contact | Replaces ABB | Contacts |
|---|---|---|
| BCA5-10 | CA5-10 | 1 NO |
| BCA5-01 | CA5-01 | 1 NC |
| BCA7-10 | CA7-10 | 1 NO |
| BCA7-01 | CA7-01 | 1 NC |
| BCAL5-11 | CAL5-11 | 1 NO / 1 NC |
Match the block to the ABB number printed on the one you are replacing. The CA5 and CA7 numbers are separate parts, so do not treat one as a substitute for the other without checking.
Sizes next to the A26 in the A-Line family
If the motor has been changed since the starter was built, the contactor that is fitted may no longer be the right size. The table shows the 3-pole A-Line sizes around the A26 with the catalogue values of the BRAH base listing, each supplied with a 120VAC coil. Every size has its own set of coil-voltage listings.
| ABB size | BRAH base listing | Amperage (catalogue) | HP at 240V | HP at 480V | HP at 600V | Auxiliary contacts |
|---|---|---|---|---|---|---|
| A9 | BA9-30-10 | 9A | 2HP | 5HP | 7.5HP | 1 NO |
| A12 | BA12-30-10 | 11A | 3HP | 7.5HP | 10HP | 1 NO |
| A16 | BA16-30-10 | 17A | 5HP | 10HP | 15HP | 1 NO |
| A26 | BA26-30-10 | 28A | 10HP | 20HP | 25HP | 1 NO |
| A30 | BA30-30-10 | 34A | 10HP | 25HP | 30HP | 1 NO |
| A40 | BA40-30-10 | 42A | 15HP | 30HP | 40HP | 1 NO |
| A50 | BA50-30-11 | 54A | 20HP | 40HP | 50HP | 1 NO / 1 NC |
| A63 | BA63-30-11 | 65A | 25HP | 50HP | 60HP | 1 NO / 1 NC |
| A75 | BA75-30-11 | 80A | 30HP | 60HP | 75HP | 1 NO / 1 NC |
A different size is a different device. It may need a different overload relay, different conductors and different mounting, so treat a change of size as an engineering change, not a like-for-like swap. The guide comparing the A26-30-10 and the A50-30 goes through those differences, and there is a separate guide to replacing an ABB A16-30-10.
Before you order: what to check on an A26-30-10
- The full part number. Copy it from the nameplate, including the last two digits if there are any. A26-30-10-81 and A26-30-10-51 are the same contactor with a 24VAC coil and a 480VAC coil.
- Coil voltage. Read it from the coil marking and confirm it against the control circuit. The coil voltage is often different from the motor voltage, because many starters use a control transformer.
- Auxiliary contacts. The A26-30-10 has one normally open contact built in. Count any add-on blocks and note whether each is normally open or normally closed.
- Load. Compare the motor nameplate voltage, full-load current and horsepower with the values on the product page.
- Overload relay. If the existing relay is staying, check that it attaches to the replacement the same way and that its setting matches the motor.
- Fit. The catalogue describes these parts as direct replacements for the ABB numbers. Still compare the mounting points and terminal positions with the contactor you have before you rely on that.
Where to get an A26-30-10 replacement
Each part in the table links to its product page on brahelectric.com, where it can be ordered directly. You can also search the site by the ABB number. Orders for in-stock parts placed before 3:00 PM Pacific ship the same business day, and shipping is calculated at checkout.
BRAH Electric designs its parts in-house and tests them at its Carlsbad, California facility. The parts are new, and contactors carry a 2-year warranty from the date of invoice. Returns are accepted within 30 days of shipment with an RMA and are subject to a restocking charge of 25 to 50 percent, so confirm the coil voltage before you order. BRAH is not an authorized ABB distributor. If you want the cross-reference checked, call (855) 355-2724, Monday to Friday, 6AM to 5PM Pacific, with the nameplate details to hand. The guide to OEM and aftermarket contactors explains what to verify on any replacement.
Safety when replacing the contactor
A starter can have a control supply that stays live when the main disconnect is open. De-energize the equipment, apply lockout/tagout to the power and control sources, and verify the absence of voltage before touching the terminals. The work should be done by qualified personnel. The step-by-step guide to wiring an A-Line contactor safely covers the procedure for the neighbouring A30 size, and the same approach applies here.
ABB A26-30-10 replacement FAQs
What does the ABB A26-30-10 contactor do?
It switches a three-phase motor or other load on and off in response to a control signal. The built-in normally open auxiliary contact gives the control circuit a holding or status contact. It does not protect the motor against overload. That is the job of the overload relay.
What is the BRAH part number for an A26-30-10?
BA26-30-10. If your ABB number has two more digits, keep them: A26-30-10-80 becomes BA26-30-10-80.
Is the A26-30-10 rated 26A?
Do not read the rating from the name. The catalogue rating of the BRAH replacement is 28A at 600V. Check the nameplate of your contactor and the motor nameplate.
How do I make sure the replacement matches my system?
Match the full part number, the coil voltage, the auxiliary contacts and the load, in that order. Then compare mounting and terminal layout. The checklist above covers each point.
Which coil voltage do I need?
The one marked on the existing coil, which should equal the control circuit voltage. The table lists 24VAC, 48VAC, 120VAC, 220/240VAC, 277VAC, 415/440VAC, 480VAC and 500/600VAC.
Can a replacement contactor affect how the motor runs?
A contactor with the same ratings, coil voltage and contact arrangement switches the motor the same way the original did. Problems come from mismatches: a coil that does not suit the control voltage, a missing auxiliary contact, or a contactor that is too small for the load.
References
- IEC 60947-4-1, Low-voltage switchgear and controlgear: contactors and motor-starters. The international standard for contactor ratings and utilization categories.
- OSHA 29 CFR 1910.147, The control of hazardous energy (lockout/tagout).
- NFPA 70E, Standard for Electrical Safety in the Workplace.