Skip Content

Leak Detection Switch,Interstitial,Horiz close
close x

Using 360° Viewing:

  1. Rotate: Use top-to-bottom, side-to-side by use of mouse arrow.
  2. Zoom In: Double click on image.
  3. Zoom Out/Reset: Put photo at full zoom & then double click.
Megaphone How can we improve our Product Images?

Leak Detection Switch, Interstitial, Horiz

Price $238.00 / each

Activate Now

to save with

Select AdvantageSM

Please sign in or register to access lists

Confirm ZIP Code to determine availability.


Invalid Zip Code


Ship to: (Change)


Invalid Zip Code

  • Item # 12U461
  • Mfr. Model # LH29-1001
  • UNSPSC # 41111938
  • Catalog Page # 3754
  • Shipping Weight 0.2 lbs.
Country of Origin USA Country of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Technical Specs

  • Item Leak Detection Switch
  • Type Interstitial
  • Orientation Horizontal
  • Contact Type 30 Watts, 240 VAC (0.14A resistive), 120 VAC (0.28A resistive), 120 VDC (0.07A resistive), 24 VDC (0.28A resistive),
  • Input Voltage 240 VAC/120 VDC max.
  • Output SPST Reed
  • Temp. Range -40 to 221 Degrees F
  • Max. Pressure 50 psi
  • Material Foamed Polypropylene, Valox 420, Stainless Steel
  • Wire Type 2 conductor, #22 AWG
  • Jacket Material Halar Jacket
  • Standards CE, UL
  • Length 3.00"
  • Width 1.50"
  • Height 0.75"
Megaphone How can we improve our Technical Specifications?

Compliance and Restrictions



Interstitial Leak Detection Switch
• Max. pressure: 50 psi Temp. range: -40° to 221°F
Provides a leak detection system in and around secondary containment tanks and sumps. Switch can be horizontally mounted on a tank wall or bottom of sump. Flat profile and minimal float rise allow mounting in tight spaces. Normally closed switch opens to alert when liquid is detected. Contact type is 30W, 240VAC (0.14A resistive), 120VAC (0.28A resistive), 120VDC (0.07A resistive), 24VDC (0.28A resistive). 2-conductor, 22 AWG wire. Switch is foamed polypropylene, Valox® 420, and stainless steel with Halar® jacket to resist corrosive liquids.
UL Listed and CE Certified.

Product Reviews Disclaimer:
Grainger is neither responsible for, nor does it endorse, the content of any product review or statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger. The statements posted by Grainger employees with the Grainger employee badge represent the views of such employees and are not the statements of Grainger. Grainger makes no representations as to the appropriateness, accuracy, completeness, correctness, currentness, suitability, or validity of any product review or statements posted, including those posted by employees with the Grainger employee badge, and is not liable for any losses, injuries or damages which may result from any such product review or statements. Use of any linked web site provided in a product review or post is at the user's own risk.