NSi Industries 24 Hour Time Sw...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$196.36
NSi Industries 24 Hour Time Switch, 40A 208-277V DPST, NEMA 1 Metal Enclosure

NSi Industries 24 Hour Time Switch, 40A 208-277V DPST, NEMA 1 Metal Enclosure

(No reviews yet) Write a Review

Model: 1104B

In Stock (leaves warehouse same day if ordered before 3pm ET)

$196.36
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

NSi Industries 24 Hour Time Switch, 40A 208-277V DPST, NEMA 1 Metal Enclosure

The NSi Industries 24 Hour Time Switch is a heavy-duty electromechanical control built for lighting, pumps, signs, air conditioning, water heaters, and fan control applications. Rated 40A at 208-277 VAC with a DPST switching action, this 24-hour time switch is housed in a NEMA 1 metal indoor enclosure for reliable screw-mount installation. Constructed to UL-CSA standards and rated for 60 Hz operation across a -40 to 165 F temperature range, it's engineered for dependable daily scheduling in commercial and light-industrial settings.

Key Features

  • Contact Rating: 40A at 208-277 VAC for reliable switching of higher-load circuits.
  • Switch Action: DPST configuration for dual-pole, single-throw control.
  • Mounting: Screw Mount for secure, straightforward installation.
  • Durable Construction: NEMA 1 metal indoor enclosure protects internal components in indoor environments.
  • Scheduling: 24 Hour time-switch cycle for automated on/off control.
  • Frequency Rating: 60 Hz operation for standard North American electrical systems.
  • Operating Temperature: Rated from -40 to 165 F for use across varied indoor conditions.
  • Standard: Built to UL-CSA specifications for code-compliant performance.

Certifications & Compliance

  • UL-CSA Listed

Technical Specifications

  • Brand Name: NSi
  • Mounting: Screw Mount
  • Action: DPST
  • Contact Rating: 208-277 VAC
  • Standard: UL-CSA
  • Type: 24 Hour Time Switch
  • Operating Temperature: -40 to 165 F
  • Scheduling: 24 Hour
  • Frequency Rating: 60 Hz
  • Enclosure: NEMA 1 Metal Indoor
  • Application: Lighting-Pumps-Signs-Air Conditioning-Water Heaters-Fan Control

Typical Applications

  • Lighting Control Systems
  • Pump Control
  • Sign Illumination Timing
  • Air Conditioning Equipment Scheduling
  • Water Heater Control
  • Fan Control Systems

Why NSi Industries?

NSi Industries builds this 24 Hour Time Switch with a NEMA 1 metal indoor enclosure and UL-CSA listing to deliver dependable, code-compliant performance for demanding commercial applications. With a robust 40A 208-277V DPST rating and a wide -40 to 165 F operating range, it's designed to keep lighting, pump, sign, HVAC, water heater, and fan control systems running on a reliable 24-hour schedule.

Manufacturer Resources

Spec Sheet

Product Specs

Mounting Method:
Screw Mount
Action:
DPST
Amperage Rating:
208-277 VAC
Standards:
UL-CSA
Product Type:
Time Switch
Operating Temperature:
-40 to 165 F
Scheduling:
24 Hour
Brand Name:
NSi
Frequency Rating:
60 Hz
Configuration:
NEMA 1 Metal Indoor
Application:
Lighting-Pumps-Signs-Air Conditioning-Watr Heaters-Fan Control
Product Material:
Metal
Listing:
UL-CSA Listed
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Lighting Controls & Sensors

NSi 1104B – Frequently Asked Questions

1) Can the NSi 1104B time switch control a 277V lighting circuit?
Yes. The NSi 1104B 24 hour time switch is rated 40A at 208-277 VAC, so it handles 208, 240, and 277 volt circuits, including the 277V lighting branch circuits common in commercial buildings. Switching is DPST, meaning both ungrounded legs break at once, which is what you want on a 208 or 277 volt two-pole load.
2) Can the NSi 1104B time switch be mounted outdoors on a pole or exterior wall?
No. The 1104B comes in a NEMA 1 metal indoor enclosure, which is drip and rain exposure is not rated for. Keep it in an electrical room, mechanical room, or other protected indoor location. For an exterior sign or parking lot lighting schedule, run the timer indoors and switch a contactor outside, or specify an outdoor-rated (NEMA 3R) time switch instead.
3) Does the NSi 1104B time switch repeat the same schedule every day, or can I set different times for weekends?
Same schedule every day. The 1104B is a 24 hour electromechanical time switch, so the dial repeats its on/off trips once per day with no day-of-week differentiation. If a building needs different weekend hours, for example a sign that stays dark Sunday, you need a 7-day time switch instead.
4) Is the NSi 1104B time switch UL listed for use on a commercial job?
Yes, it's UL-CSA Listed and built to UL-CSA standards, which is what an inspector or an institutional spec usually calls for on a lighting or equipment control device. The frequency rating is 60 Hz, matching standard North American power.
5) Can this NSi time switch be installed in an unheated mechanical room or garage?
Yes. The 1104B carries an operating temperature range of -40 to 165 F, which covers unconditioned indoor spaces, attics, and mechanical rooms running hot next to boilers. The limit is moisture and dust, not temperature: the NEMA 1 metal enclosure is an indoor-only housing.
6) How does the NSi 1104B time switch mount, and does it need a backbox?
It's a screw-mount unit: the metal NEMA 1 enclosure fastens directly to a wall, backboard, or strut with screws, so no separate box is required. Plan the location for an indoor surface and allow access to the dial for setting trippers.
How fast can I get the NSi 1104B 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 NSi 1104B come with a warranty?
Absolutely. The NSi 1104B 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 NSi 1104B?
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 NSi 1104B 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.
!