How to Choose the Right Replacement for an LC1D0910 Contactor

The LC1D0910 is a 3-pole Telemecanique TeSys D contactor with one normally open auxiliary contact, and the BRAH Electric replacement for it is the BLC1D0910. The catalogue lists that part at 25A, 600V and 5HP with a 110/120VAC coil. The right replacement is the listing whose coil voltage matches your control circuit: BRAH lists 16 parts for this contactor, with coils from 24VAC to 480VAC.

Everything else about those 16 parts is the same in the catalogue, so choosing comes down to reading the suffix on the old contactor correctly. This guide gives the full variant list, the checks to make before ordering, and the coils, auxiliary blocks and overload relays listed for the same contactor.

LC1D0910 replacement: quick answer

• No suffix on the nameplate: order the BLC1D0910, which is listed with a 110/120VAC coil.
• A suffix such as -B7, -U7 or -T6: order the BRAH part with the same suffix. The coil voltage for each is in the variant table.
• All variants are listed with the same catalogue ratings: 25A, 600V, 3-pole, 5HP, 1 NO auxiliary contact.
• The 25A figure is the catalogue rating, not a motor rating. Check the motor against the horsepower figure and the old nameplate.
• If only the coil has burnt out, a replacement coil may be all you need.

What the LC1D0910 is, by the catalogue record

These are the values on the BRAH catalogue record for the BLC1D0910.

The description of the same part also gives horsepower by supply voltage: up to 2HP at 240V, up to 5HP at 480V and 7.5HP at 600V. Horsepower depends on the supply voltage, so compare the row for your voltage with the motor nameplate.

The LC1D0910 is sometimes described by a current figure taken from the digits in its number. The digits 09 are a size code. Use the catalogue values above and the nameplate of the contactor in your panel, and do not treat the 25A catalogue amperage as the motor current it is meant to switch.

LC1D0910 coil-voltage variants and their BRAH part numbers

The table is sorted by coil voltage. The BRAH number is always the Telemecanique number with a B in front.

That is 10 coil voltages across 16 listings. Several voltages appear twice, with a suffix ending in 6 and one ending in 7 (for example -G6 and -G7). In the BRAH replacement coil listings for this contactor, a number ending in 6 is a 60Hz coil and a number ending in 7 is a 50/60Hz coil. If your nameplate shows a suffix that is not in the table, call (855) 355-2724 with the part number.

How to choose: four checks

1. Coil voltage

Read the voltage on the coil of the installed contactor, then confirm it on the control circuit drawing. The coil voltage is often lower than the motor voltage because the control circuit is fed from a transformer. A contactor ordered with the wrong coil either will not close or will burn the coil out.

2. Load

Compare the motor nameplate horsepower and voltage with the catalogue horsepower. If the motor is larger than the LC1D0910 replacement is listed for, the original contactor was probably not an LC1D09, so re-read the nameplate before ordering.

3. Auxiliary contact

The 10 at the end of LC1D0910 identifies the built-in auxiliary contact, which the catalogue lists as 1 NO. It is normally the contact that seals in the coil after the start button is released. If the old contactor also carries an add-on block on the top or side, note what it is so you can move it across or order a matching block.

4. Fit

Check how the old contactor is fixed in the panel and where its terminals sit, and compare with the photos and drawings on the product page. The BLC1D0910 is described as a direct substitute for the LC1D0910. Confirm it against your own panel all the same, especially where an overload relay or interlock is attached to the contactor.

Coils, auxiliary blocks and overload relays for the LC1D09

A contactor with a failed coil and sound contacts can often be repaired. BRAH lists two types of replacement coil whose descriptions name the LC1D09: type LXD1 (75 coils, for example the BLXD1G7 at 120VAC 50/60Hz) and type LX1D2 (20 coils, for example the BLX1D2G7 at 120VAC 50/60Hz). Match the type number printed on the old coil, then the voltage. All are under magnetic coils.

To add or replace auxiliary contacts, the catalogue lists these blocks for TeSys D contactors from LC1D09 through LC1D150:

For motor protection, BRAH lists 15 LR2D overload relays that name the LC1D09, from the BLR2D1301 (0.1A – 0.16A) to the BLR2D1322 (17A – 25A). Choose by the motor full-load current. The full relay table is in the guide to troubleshooting an overload relay. Where two contactors are paired for reversing, the BLA9D09978 mechanical interlock is listed for LC1D09 through LC1D32. See also auxiliary contacts and overload relays.

Numbers that are close to LC1D0910 but different

• LC1D1210 and LC1D1810 are the next sizes up. Their replacements, the BLC1D1210 and BLC1D1810, are listed at 7.5HP and 10HP.
• LC2D0910 is the reversing version, replaced by the BLC2D0910.
• LP1D0910 is the version with a DC coil, replaced by the BLP1D0910 (120VDC).
• For the whole family, see the guide to cross-referencing Telemecanique LC1D contactors or browse replacement contactors.

Mistakes that lead to a return

• Ordering by LC1D0910 alone when the nameplate carries a coil suffix.
• Assuming the coil voltage equals the line voltage.
• Picking a contactor of similar size from another range and expecting the mounting and terminals to line up.
• Forgetting the add-on auxiliary block or the interlock that was fitted to the old unit.

Returns are accepted within 30 days of shipment with an RMA and carry a restocking charge of 25 to 50 percent, so a few minutes with the nameplate is worth it.

Safety when replacing the contactor

Isolate and lock out the supply to the starter, including the control circuit if it has its own source, then test for absence of voltage before loosening any terminal. Replacement should be carried out by qualified personnel. Move the wires across one at a time, or label them, so the new contactor is connected exactly as the old one was.

Warranty and ordering

BRAH Electric contactors carry a 2-year warranty from the date of invoice. The parts are designed in-house and tested at the BRAH facility in Carlsbad, California. BRAH is an aftermarket manufacturer and is not an authorized distributor of Telemecanique products. Orders for in-stock parts placed before 3:00 PM Pacific ship the same business day, and shipping is calculated at checkout.

LC1D0910 FAQs

What does LC1D0910 mean?

LC1D is the type, a TeSys D contactor with an AC coil. 09 is the size code. 10 identifies the built-in auxiliary contact, listed in the catalogue as one normally open contact.

Which BRAH part replaces the LC1D0910?

The BLC1D0910 for the number with no suffix. For a suffixed number such as LC1D0910-U7, the replacement is the BLC1D0910-U7.

Is LC1D09 the same as LC1D0910?

The catalogue lists both with the same ratings, a 110/120VAC coil and 1 NO auxiliary contact. The replacements are the BLC1D09 and the BLC1D0910.

Can I use a different coil voltage from the original?

Only if the control circuit voltage has changed. Otherwise order the same coil voltage as the contactor you are removing.

How do I install the replacement?

De-energize and lock out the circuit, verify the absence of voltage, remove the old contactor, mount the new one in the same position and reconnect each wire to the same terminal. Test the control circuit before putting the motor back on load.

What warranty covers the replacement?

Two years from the date of invoice. Claims and returns follow the returns and warranty policy.

References

• IEC 60947-4-1, Low-voltage switchgear and controlgear: contactors and motor-starters. Covers how contactors are rated.
• OSHA 29 CFR 1910.147, The control of hazardous energy (lockout/tagout).
• OSHA 29 CFR 1910.333, Selection and use of work practices for work on or near electrical equipment.