WattStopper ELCU-200 Emergency...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$258.11
$199.84
WattStopper ELCU-200 Emergency Lighting Control Unit for KO Mounting

WattStopper ELCU-200 Emergency Lighting Control Unit with Zero Cross Switching Technology

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Model: ELCU-200
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$258.11
$199.84
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WattStopper ELCU-200 Emergency Lighting Control Unit with Zero Cross Switching Technology

Professional Emergency Lighting Control & Energy Management

The WattStopper ELCU-200 Emergency Lighting Control Unit delivers reliable emergency lighting control with advanced zero cross switching technology for enhanced reliability and extended product life. This professional-grade control unit operates as both a control device and shunt, eliminating energy waste from always-on emergency lighting while ensuring code-compliant emergency illumination when needed.

Professional Features & Benefits

  • Zero Cross Switching Technology: Provides enhanced reliability and increased product life through precise switching control
  • Remote Activation Capability: Connects to EMTS-100 Remote Test Switch for convenient remote emergency activation
  • Dual Operation Modes: Functions as both control device and shunt for versatile installation flexibility
  • Energy Waste Elimination: Prevents unnecessary energy consumption from emergency lighting that remains always on
  • Integral Push-to-Test Button: Enables true test condition activation for reliable emergency mode verification
  • Local Power Failure Detection: Automatically senses single circuit power failure for immediate emergency response
  • System Compatibility: Works seamlessly with WattStopper occupancy sensors, daylighting controls, lighting control panels, and dimmers

Technical Specifications

  • Country Of Origin: China
  • Product Depth Us: 4.0 in
  • Product Height Us: 2.15 in
  • Product Volume Us: 25.8 cu in
  • Product Weight Us: 0.43 lb
  • Product Width Us: 3.0 in

Professional Applications

  • Commercial Building Emergency Lighting Systems
  • Office Building Code Compliance
  • Retail Establishment Safety Lighting
  • Educational Facility Emergency Systems
  • Healthcare Facility Emergency Illumination
  • Industrial Emergency Lighting Control
  • Multi-Tenant Building Applications

Why Choose WattStopper Quality?

WattStopper delivers professional-grade emergency lighting control solutions engineered for reliability and code compliance. The ELCU-200's compact design and robust construction ensure dependable performance in demanding commercial applications, while zero cross switching technology maximizes product longevity and system reliability.

Manufacturer Resources

Product Specs

Country Of Origin:
China
Product Depth Us:
4.0 in
Product Height Us:
2.15 in
Product Volume Us:
25.8 cu in
Product Weight Us:
0.43 lb
Product Width Us:
3.0 in

WattStopper ELCU-200 – Frequently Asked Questions

1) What does the WattStopper ELCU-200 emergency lighting control unit actually do in an emergency lighting circuit?
The ELCU-200 works as both a control device and a shunt. In normal operation it lets the emergency fixtures switch off with the rest of the lighting instead of burning around the clock. When it senses a power failure on the circuit it is watching, it shunts the emergency fixtures full on so the space stays illuminated. That is the whole point of the device: emergency heads that stay dark and out of the way until they are needed.
2) Can the ELCU-200 be tested without pulling the breaker?
Two ways to test it. There is an integral push-to-test button on the unit that puts it into a true emergency condition, and it accepts a WattStopper EMTS-100 Remote Test Switch so the test can be triggered from a location that is easier to reach than a ceiling or a junction box. For a facilities crew doing monthly emergency lighting checks in a corridor or stairwell, the remote switch is usually the difference between a one-person test and a ladder.
3) Will the ELCU-200 fit in a standard junction box knockout?
The ELCU-200 is built for KO mounting, so it lands on a knockout in a junction box or fixture housing rather than needing its own enclosure. Body size is 4.0 in deep by 3.0 in high by 2.15 in wide, about 25.8 cubic inches of displacement, and it weighs 0.43 lb. Check the free volume in the box you are mounting to, since roughly 26 cubic inches of device plus your conductors is what has to live in there.
4) Can I put emergency lights on an occupancy sensor if I use an ELCU-200?
That is exactly the problem this unit solves. Emergency fixtures on a sensor-controlled or dimmed circuit would normally have to be left always on to stay compliant. The ELCU-200 sits between the normal circuit and the emergency fixtures and works alongside WattStopper occupancy sensors, daylighting controls, lighting control panels, and dimmers, so those fixtures follow the control strategy in normal use and go to full output when the circuit loses power.
5) What is the WattStopper part number for the emergency lighting control unit, and is there more than one version?
One model, ELCU-200, and that is the manufacturer part number you order by. There are no finish, voltage, or configuration variants to specify.
6) Does the ELCU-200 monitor the whole panel or just one circuit?
Local, single circuit. The ELCU-200 senses a power failure on the one circuit it is wired to and drives its emergency fixtures from that. It is not a panel-level or building-level transfer scheme, which is why it is normally installed one per area, near the fixtures it controls, instead of centrally.
7) What is zero cross switching on the ELCU-200 and does it matter for me?
Zero cross switching times the relay operation to the point where the AC waveform crosses zero, so the contacts are not making or breaking under load current. WattStopper specifies it on the ELCU-200 for reliability and longer product life. On a device that may sit for months and then has to transfer on the one night it matters, contact life is the spec worth caring about.
How fast can I get the WattStopper ELCU-200 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the WattStopper ELCU-200 come with a warranty?
Absolutely. The WattStopper ELCU-200 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the WattStopper ELCU-200?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the WattStopper ELCU-200 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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