(855) 355-2724
The Telemecanique LC2K09 is a 3-pole TeSys K reversing contactor, and its BRAH Electric replacement is the BLC2K09: the same number with a B in front. Before you fit one, confirm three things against the old unit: the coil voltage given by the suffix, the auxiliary contact (10 or 01 in the number), and the mounting and terminal positions. The catalogue lists 11 LC2K09 replacements, all at 20A, 600V and 5HP, with coils of 24VAC, 120VAC, 240VAC or 480VAC.
LC2K09 compatibility check: the short list
- Copy the whole number from the nameplate, for example LC2K0910-B7. Every character matters.
- Coil: the catalogue lists -B7 as 24VAC, -G7 as 120VAC, -U7 as 240VAC and -T7 as 480VAC. A number with no suffix is listed at 120VAC.
- Auxiliary contact: 10 is listed as one normally open, 01 as one normally closed.
- Load: compare the motor nameplate with the 5HP catalogue figure. The 20A catalogue amperage is not a motor rating.
- Fit: compare mounting and terminal positions with the product page before you order.
- After fitting, prove both directions and the interlock before the machine goes back into service.
What makes the LC2K09 different from an LC1K09
A reversing contactor is two contactors built as one assembly. One connects the motor for forward rotation. The other swaps two of the three phases so the motor runs in reverse. The two are interlocked so they cannot both close, because closing both would short two phases together. The catalogue describes every LC2K09 replacement as a reversing AC rated contactor, and the non-reversing LC1K09 as an AC rated contactor.
That is why an LC1K09 cannot stand in for an LC2K09, even though both are listed at 5HP. It is also why the checks below go further than they would for a single contactor: there are two coils to energize, two directions to test and an interlock to prove. The difference between the K06 and K09 sizes is covered in LC1K06 vs LC1K09.
BRAH replacements for the Telemecanique LC2K09
All 11 listings are 3-pole, 3-phase and rated 600V. Find the row that matches the number on your nameplate.
| Telemecanique number | BRAH replacement | Coil voltage | Auxiliary contact | Amperage (catalogue) | Horsepower (catalogue) |
|---|---|---|---|---|---|
| LC2K09 | BLC2K09 | 120VAC | 1 NC | 20A | 5HP |
| LC2K0901 | BLC2K0901 | 120VAC | 1 NC | 20A | 5HP |
| LC2K0901-B7 | BLC2K0901-B7 | 24VAC | 1 NC | 20A | 5HP |
| LC2K0901-G7 | BLC2K0901-G7 | 120VAC | 1 NC | 20A | 5HP |
| LC2K0901-U7 | BLC2K0901-U7 | 240VAC | 1 NC | 20A | 5HP |
| LC2K0901-T7 | BLC2K0901-T7 | 480VAC | 1 NC | 20A | 5HP |
| LC2K0910 | BLC2K0910 | 120VAC | 1 NO | 20A | 5HP |
| LC2K0910-B7 | BLC2K0910-B7 | 24VAC | 1 NO | 20A | 5HP |
| LC2K0910-G7 | BLC2K0910-G7 | 120VAC | 1 NO | 20A | 5HP |
| LC2K0910-U7 | BLC2K0910-U7 | 240VAC | 1 NO | 20A | 5HP |
| LC2K0910-T7 | BLC2K0910-T7 | 480VAC | 1 NO | 20A | 5HP |
The amperage column is the catalogue value and is the same for the LC2K06, LC2K09 and LC2K12. Do not read it as the motor current the contactor is meant for. Match the replacement to the nameplate of the unit you are removing and to the motor nameplate. For a number that is not in the table, call (855) 355-2724 with the part number.
Check 1: suffix and coil voltage
The coil is the detail most often ordered wrong. Read the voltage printed on the coil of the installed contactor and confirm it against the control circuit drawing. Do not assume the coil runs at the motor voltage. A 480V starter often has a 120VAC or 24VAC control circuit fed from a control transformer.
All LC2K09 listings in the table have AC coils. A coil fed with too low a voltage may chatter or fail to pull in. A coil fed with too high a voltage overheats. On a reversing contactor both coils are the same voltage, so one check covers both directions.
Check 2: auxiliary contacts
The two digits after 09 identify the built-in auxiliary contact. The catalogue lists the LC2K0910 with one normally open contact and the LC2K0901 with one normally closed contact. The bare number LC2K09 is listed with one normally closed contact.
Look at how the contact is wired before you order. A normally open contact is typically used to hold the coil in after a momentary start signal. A normally closed contact is typically wired in series with the opposite coil as an electrical interlock. Swapping one for the other changes how the control circuit behaves. If the old unit carries an add-on block, BRAH lists LA1K top mount auxiliary contacts for TeSys K contactors, such as the BLA1KN20 (2 NO) and BLA1KN22 (2 NO / 2 NC). Their descriptions name the LC1K06 through LC1K12 and LP1K06 through LP1K12, so call to confirm use on an LC2K before ordering one for a reversing unit.
Check 3: mounting and terminals
A reversing contactor is wider than a single contactor because it holds two side by side, so panel space matters more. Before ordering, compare the installed unit with the photos and drawings on the product page:
- How the unit is fixed to the panel, and the position of the fixing points.
- The position of the line and load terminals, and of the links between the two contactors that reverse the phases.
- Where the coil terminals and auxiliary terminals sit, so the existing control wires reach.
- Clearance to neighbouring devices and to the overload relay, if one is mounted to the contactor.
If anything on your unit looks different from the product page, send the nameplate details before ordering.
Check 4: the overload relay
The contactor switches the motor. The overload relay protects it. If the existing relay stays, confirm it is a type listed for the LC2K09. BRAH lists 14 LR2K replacement relays, and every one names the LC2K09 in its description, along with the LC2K06, LC2K12 and the LC1K sizes. Each is described as an assembled unit with a manual reset button.
| Telemecanique relay | BRAH replacement | Adjustment range |
|---|---|---|
| LR2K0301 | BLR2K0301 | 0.1 to 0.16 A |
| LR2K0302 | BLR2K0302 | 0.16 to 0.23 A |
| LR2K0303 | BLR2K0303 | 0.23 to 0.36 A |
| LR2K0304 | BLR2K0304 | 0.36 to 0.54 A |
| LR2K0305 | BLR2K0305 | 0.54 to 0.8 A |
| LR2K0306 | BLR2K0306 | 0.8 to 1.2 A |
| LR2K0307 | BLR2K0307 | 1.2 to 1.8 A |
| LR2K0308 | BLR2K0308 | 1.8 to 2.8 A |
| LR2K0310 | BLR2K0310 | 2.6 to 3.7 A |
| LR2K0312 | BLR2K0312 | 3.8 to 5.5 A |
| LR2K0314 | BLR2K0314 | 5.5 to 8 A |
| LR2K0316 | BLR2K0316 | 8 to 11.5 A |
| LR2K0321 | BLR2K0321 | 10 to 14 A |
| LR2K0322 | BLR2K0322 | 12 to 16 A |
Pick the relay whose range contains the motor full-load current, not the one that matches the contactor size. More on choosing and fault-finding a relay is in troubleshooting an overload relay. Browse all replacement overload relays.
LC2K06, LC2K12 and other close numbers
The numbers around the LC2K09 differ by one or two characters and are not interchangeable without checking the load and the control supply.
| Telemecanique size | BRAH base part | Amperage (catalogue) | Horsepower (catalogue) | Coil voltages listed | Type |
|---|---|---|---|---|---|
| LC2K06 | BLC2K06 | 20A | 3HP | 24VAC, 120VAC, 240VAC, 480VAC | reversing |
| LC2K09 | BLC2K09 | 20A | 5HP | 24VAC, 120VAC, 240VAC, 480VAC | reversing |
| LC2K12 | BLC2K12 | 20A | 7.5HP | 24VAC, 120VAC, 240VAC, 480VAC | reversing |
| LC1K09 | BLC1K09 | 20A | 5HP | 24VAC, 120VAC, 240VAC, 480VAC | non-reversing |
| LP2K09 | BLP2K09 | 20A | 5HP | 24VDC, 120VDC, 240VDC | reversing |
The LP2K09 is the version listed with DC coils. Browse all replacement contactors for the other sizes.
Testing after installation
With the wiring complete and the covers on, test in this order:
- With the motor leads still disconnected or the load uncoupled where practical, energize the forward coil and check that the contactor pulls in cleanly without chatter.
- Do the same for reverse.
- Prove the interlock: with forward held in, a reverse command must not close the reverse contactor.
- Check that each auxiliary contact changes state as the control circuit expects.
- Run the motor in each direction and confirm the rotation matches the labels on the controls.
- Under load, measure the running current against the motor nameplate and the overload relay setting.
Safety
Reversing starters have more live parts than a single contactor, and a wiring mistake can put two phases together. De-energize the starter, apply lockout/tagout to the power and control sources, and verify the absence of voltage before you start. Photograph and label the wiring first. Only qualified personnel should do this work.
Ordering, warranty and support
BRAH Electric designs its parts in-house and tests them at its facility in Carlsbad, California. BRAH is an aftermarket manufacturer and is not an authorized distributor of Telemecanique or Schneider Electric. Contactors are covered by 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, which is one more reason to run the checks above first. In-stock orders placed before 3:00 PM Pacific ship the same business day. The phone line, (855) 355-2724, is open Monday to Friday, 6AM to 5PM Pacific.
LC2K09 replacement FAQs
What replaces a Telemecanique LC2K09?
The BRAH BLC2K09, or the BLC2K09 variant that matches your full number. LC2K0910-U7, for example, is replaced by BLC2K0910-U7.
Why is coil voltage critical when replacing an LC2K09?
The coil closes the contactor. If its voltage does not match the control circuit, the contactor may not pull in, or the coil may overheat and fail.
Can I use a higher-rated contactor instead?
The LC2K12 replacement is listed at 7.5HP with the same coil voltages. A larger contactor can switch a smaller motor, but confirm fit, coil and auxiliary contact first, and keep the overload relay sized to the motor.
Do I need to replace the overload relay too?
Not always. If the relay is in good condition and its range covers the motor full-load current, it can stay. The LR2K replacement relays in the catalogue all name the LC2K09.
What happens if the auxiliary contact does not match?
The control circuit may not seal in, or the electrical interlock between forward and reverse may be lost. Match 10 or 01 to the old unit.
How do I keep downtime short?
Record the full part number, the coil voltage and the wiring before the old unit comes out, and order the exact match so the replacement goes in without changes to the panel.
References
- IEC 60947-4-1, Low-voltage switchgear and controlgear, Part 4-1: contactors and motor-starters, including reversing starters.
- OSHA 29 CFR 1910.147, The control of hazardous energy (lockout/tagout).
- OSHA 29 CFR 1910.333, Selection and use of work practices, covering de-energized work and verification.