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EE Controls LSN7-400-A : 4-Pole Lighting Contactor, Normally Open, 120 VAC 50/60 Hz Coil Voltage, 30A Maximum Amperage Rating Ballast / LED , IEC 60947 / UL 508 / CSA 22.2 #14 Standards

EE Controls LSN7-400-A : Discontinued 4-Pole Lighting Contactor, Normally Open, 120 VAC Coil - Replaced by WEG CWM18-00-40V18

EE Controls

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SKU:
LSN7-400-A
Condition:
New
Availability:
Discontinued - see CWM18-00-40V18
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EE Controls LSN7-400-A : Discontinued 4-Pole Lighting Contactor, Normally Open, 120 VAC Coil - Replaced by WEG CWM18-00-40V18

StatusDiscontinued
Replaced ByWEG CWM18-00-40V18
Configuration4-Pole Normally Open
Coil Voltage120VAC / 50-60 Hz
Contact Rating30A Ballast/LED @ 600VAC

This part is discontinued. EE Controls supplies the WEG CWM18-00-40V18 in its place.

EE Controls LSN7-400-A → WEG CWM18-00-40V18

You are still specifying the same thing: a 4-pole lighting contactor, a coil voltage, and normally open or normally closed. The CWM18-00-40V18 is the part EE Controls gives as the cross-reference for the LSN7-400-A. The WEG datasheet for the CWM18-00-40V18 is linked in the documents section below. Read the ratings comparison below before you order, and check the coil line in particular.

View WEG CWM18-00-40V18

The EE Controls LSN7-400-A is a 4-pole, normally open, electrically held lighting contactor with a 120 VAC 50/60 Hz control coil, rated 30 A for ballast and LED loads to 600 VAC under AC-5a and AC-5b, and 32 A breaking all lines at 600 VAC. In the LSN7-400-A, all four poles are open with the coil de-energized, so the lighting circuits go off when control power is lost. EE Controls has discontinued this catalog number and cross-references it to the WEG CWM18-00-40V18.

The LSN7 to CWM18 crossover part numbers on this page were supplied by EE Controls. They are not printed in either manufacturer datasheet, so treat them as a vendor-supplied cross-reference rather than a published equivalency. Confirm fit and ratings against your own submittal before you order.

What the swap changes

Poles and switching

Four main poles either way, switching up to four lighting circuits from one control point. WEG's datasheet for the CWM18-00-40V18 states 4 NO main contacts and no auxiliary contacts.

Coil voltage

The coils are not documented identically. EE Controls lists coil code A as 120 VAC at 50/60 Hz. WEG's datasheet for the CWM18-00-40V18 lists 110 V at 50 Hz and 120 V at 60 Hz. On a 120 V, 60 Hz control circuit the two published coil ratings align at 120 V. On 50 Hz they are not the same, so confirm before you use this on an export panel.

Fail state

Both parts are normally open, so on a loss of control power the lights go off. For the CWM18-00-40V18 this comes from the EE Controls cross-reference and is consistent with the 4 NO main contacts in WEG's datasheet.

Panel footprint

The LSN7 drawing and the WEG CWM18-00-40V18 datasheet both give an 81 x 45 x 87 mm body. Mounting is where they part company on paper: EE Controls publishes 35 mm DIN rail or panel surface, WEG's datasheet lists installation as not available. Check your rail and backplate.

Terminations

Tightening torque matches in both documents at 15 lb.in on the power terminals and 10 lb.in on the control terminals. Conductor range does not compare directly: EE Controls publishes 14-10 AWG and 16-12 AWG, WEG publishes its conductor sections in mm2 only.

Brand and label

The contactor ships marked WEG rather than EE Controls, so any submittal, panel schedule or drawing that calls out the LSN7 by catalog number needs updating.

LSN7 series and WEG CWM18 frame - published ratings side by side

Left column is read from the EE Controls LSN7 nameplate and LSN Series catalog. Right column is read from the WEG Contactors datasheet for product code 13323656 (CWM18-00-40V18). Eleven lines agree. Five do not, and they are marked in amber.

Published ratingEE Controls LSN7WEG CWM18
Coil, EEC code A / WEG code V18120 VAC 50/60 Hz110 V 50 Hz / 120 V 60 Hz
Rated current Ie, AC-318 A at 240 / 400 / 440 V18 A at Ue 440 V or less
Rated current Ie, AC-3 at 500 V14 ANot published by WEG
Rated current Ie, AC-3 at 690 V13 A13 A at Ue 690 V or less
General purpose current32 A, break all lines, 600 VAC32 A, AC-1, Ue 690 V or less at 55 C or less
AC-1 power at 240 / 400 / 440 / 500 V12 / 22 / 23 / 27.5 kW12 / 22 / 23 / 27.5 kW
AC-3 power at 240 / 400 / 440 / 500 / 690 V4.5 / 7.5 / 9.2 / 9.2 / 11 kW4.5 / 7.5 / 9.2 / 9.2 / 11 kW
AC-3 motor rating, IEC (HP)6 / 10 / 12.5 / 12.5 / 15 HP6 / 10 / 12.5 / 12.5 / 15 HP
UL HP, 1-phase at 120 / 240 V1 / 3 HP1 / 3 HP
UL HP, 3-phase at 200 / 240 / 480 / 600 V5 / 5 / 10 / 15 HP5 / 5 / 10 / 15 HP
Short-circuit current rating at 600 V5 kA5 kA
Tightening torque, power / control terminals15 lb.in / 10 lb.in15 lb.in / 10 lb.in
Conductor range, power / control terminals14-10 AWG / 16-12 AWGPublished in mm2 only: 0.5-6 mm2 / 0.5-4 mm2
Body size, height x width x depth81 x 45 x 87 mm81 x 45 x 87 mm
Mounting35 mm DIN rail or panel surfaceNot published by WEG (datasheet lists installation as not available)
AC-5a / AC-5b lighting rating30 A at 347/600 VAC, 3 phaseNot published by WEG

Read the five amber lines before you order. The coil is the one that matters most on a control circuit: EE Controls documents 120 V at both 50 and 60 Hz, WEG documents 110 V at 50 Hz and 120 V at 60 Hz, so the two agree on 60 Hz service and not on 50 Hz. The AC-5a and AC-5b lighting rating is printed on the EE Controls nameplate and is not published by WEG at all, so if your specification cites an AC-5 figure, contact us before you order and we will get it confirmed in writing. Mounting and AWG conductor ranges are published by EE Controls and not by WEG, which does not mean they differ, only that WEG's datasheet does not state them.

Technical specifications - EE Controls LSN7-400-A

SpecificationValue
Part numberLSN7-400-A
Contact configuration4-pole normally open (NO), electrically held
Coil voltage120 VAC 50/60 Hz (coil code A)
SeriesEE Controls LSN7
Number of poles4
Amperage rating, ballast / LED at 600 VAC maximum30 A
Utilization categoriesAC-5a (discharge lamps), AC-5b (incandescent lamps)
General purpose current, break all lines at 600 VAC32 A
Rated current Ie, AC-318 A at 240 / 400 / 440 V, 13 A at 690 V
Short-circuit current rating at 600 V5 kA
Power terminals14-10 AWG, 15 lb.in
Control terminals16-12 AWG, 10 lb.in
Body size, height x width x depth81 x 45 x 87 mm
Mounting35 mm DIN rail or panel surface
StandardsUL 508, CSA 22.2 #14, IEC 60947, CE
Lifecycle statusDiscontinued. Replaced by WEG CWM18-00-40V18.

Technical specifications - WEG CWM18-00-40V18

Read from the WEG Contactors datasheet, product code 13323656.

SpecificationValue
Part numberCWM18-00-40V18
Main contacts (power)4 NO
Auxiliary contactsNone
Control voltage110 V 50 Hz / 120 V 60 Hz
Rated utilization voltage Ue, IEC / UL690 V / 600 V
Rated current Ie, AC-3 at Ue 440 V or less18 A
Rated current Ie, AC-3 at Ue 690 V or less13 A
Rated current Ie, AC-1, Ue 690 V or less at 55 C or less32 A
Rated impulse withstand voltage Uimp6 kV
Mechanical lifespan10 million operations
Electrical lifespan, AC-31.2 million operations
Degree of protection, main / control circuitIP10 / IP20
Terminal typeScrew, M3.5 flat / Phillips
Tightening torque, power / control15 lb.in / 10 lb.in
InstallationNot stated in the WEG datasheet
Ambient temperature, operation-25 C to +55 C
Dimensions, height x width x depth81 x 45 x 87 mm (3.19 x 1.77 x 3.43 in)
Weight300 g
StandardsIEC 60947-1, UL 508
CertificationsCE, UL, EAC

Datasheets and technical documents

PDFWEG CWM18-00-40V18 Datasheet (product code 13323656)
PDFEE Controls LSN Series Catalog & Datasheet
PDFEE Controls LSN Series Technical Data
PDFLSN Series EU Declaration of Conformity (CE / RoHS)

Frequently asked questions

What replaces the EE Controls LSN7-400-A?

EE Controls cross-references the LSN7-400-A to the WEG CWM18-00-40V18. That crossover comes from EE Controls rather than from a published manufacturer equivalency document, so confirm ratings and fit against your own submittal.

Will the WEG CWM18-00-40V18 fit where the LSN7-400-A was?

Treat it as a cross-reference to verify, not a documented drop-in. The body size matches at 81 x 45 x 87 mm in both documents and the terminal torque matches at 15 lb.in and 10 lb.in. WEG's datasheet does not publish mounting information, does not publish conductor ranges in AWG, and documents the coil as 110 V at 50 Hz and 120 V at 60 Hz rather than 120 V at both. Check those three points against your panel before you order.

Does the WEG CWM18-00-40V18 use the same coil voltage as the LSN7-400-A?

Not identically. EE Controls lists coil code A on the LSN7-400-A as 120 VAC at both 50 and 60 Hz. WEG's datasheet for the CWM18-00-40V18 lists 110 V at 50 Hz and 120 V at 60 Hz. On a 120 V, 60 Hz control circuit the two published coil ratings align at 120 V. On a 50 Hz circuit they do not, so confirm the coil rating before using the CWM18-00-40V18 outside 60 Hz service.

How similar are the EE Controls LSN7 and the WEG CWM18?

On published data they line up on most lines. The LSN7 nameplate and the WEG CWM18-00-40V18 datasheet give the same 18 A AC-3 rating at 440 V and below. Both also publish a 32 A figure for general purpose duty, though each states it under its own description: EE Controls states 32 A breaking all lines at 600 VAC, WEG states 32 A under AC-1 at Ue 690 V or less and 55 C or less. They also give the same AC-1 and AC-3 power ratings at 240, 400, 440 and 500 V, the same UL single-phase and three-phase horsepower ratings, the same 5 kA short-circuit rating, the same terminal torques and the same 81 x 45 x 87 mm body. They differ on 5 published lines: the coil frequency split, the 500 V AC-3 current, conductor ranges in AWG, mounting, and the AC-5a / AC-5b lighting rating. The comparison table on this page shows each line with its source.

What is the amperage rating I should be specifying?

For lighting duty the EE Controls nameplate figure on the LSN7-400-A is 30 A ballast and LED at 600 VAC under AC-5a and AC-5b. The general purpose figure, breaking all lines at 600 VAC, is 32 A. The motor figure is 18 A AC-3 at 440 V and below. Those are three different rating categories, so match the category to the load you are switching rather than reading across. WEG does not publish an AC-5a or AC-5b rating for the CWM18, so if your specification cites one, ask us to get it confirmed in writing.

Why is the LSN7-400-A normally open?

The LSN7-400-A is normally open (NO), which means all four poles are open with the coil de-energized, so the lighting circuits go off when control power is lost. EE Controls cross-references it to the CWM18-00-40V18, which is also normally open, so the intended fail state of the circuit is the same.

Are the other LSN7 coil voltages still available?

Some LSN7 coil voltages are still on the shelf at ZOT Supply. Crossover part numbers for those coil voltages have not been issued to us yet. Contact us for current availability on a specific coil code.

Can I still buy the LSN7-400-A?

No. The LSN7-400-A is discontinued and is no longer available for purchase from ZOT Supply.

What if I need the normally closed version instead?

EE Controls cross-references the LSN7-04-A to the WEG CWM18-00-04X18, which is the 4-pole normally closed version.

Sources: EE Controls LSN Series Lighting Contactor catalog (nameplate and selection tables); WEG Contactors datasheet, product code 13323656 (CWM18-00-40V18), issue dated 14/09/2026. Crossover part numbers supplied by EE Controls. Reviewed 14 September 2026.

# of Poles:
4
Coil Voltage:
120VAC
Current Rating:
30A
Configuration:
Normally Open

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  • 5
    Lighting Contactors

    Posted by Alison Fickle on 17th Jan 2025

    Best price I could find, not a long wait to receive.

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