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Main product image of 750-MT-120, GuardDog Electronic Manual Reset Low Water Cutoff (Water)
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750-MT-120, GuardDog Electronic Manual Reset Low Water Cutoff (Water)

SKU:
176207
Rating:
(4)
Q&A:
(0)
750-MT-120, GuardDog Electronic Manual Reset Low Water Cutoff (Water)
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176207 has been discontinued
Discontinued October 2, 2025
This product was discontinued by the manufacturer.
Suggested Alternative:
FPC-1000, boilerwize Electronic Low Water Cut-Off w/o Probe, 24V/120V, Auto/Manual (Steam/Water)
SKU:144704
(1)
Order by today, receive 16 by Monday
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Product Highlights

Product Highlight: Voltage
120v

Description

  • For commercial or industrial applications
  • Primary or secondary control on hot water boilers
  • Secondary control (manual reset models only) on steam boilers
  • Manual reset models meet the requirements of ASME Standard CSD-1. If the control is in a low water condition when there is an interruption of power, the control will remain in a low water condition when power is restored. The reset button will need to be pressed when the water level is restored to a level above the probe to allow the burner to fire.
  • Green LED power indicating light
  • Red LED low water indicating light
  • Test switch
  • 20,000 ohms sensitivity

Specs

Application:

Hot Water Boilers

Steam Boilers

Type:

Electronic

Reset Type:

Manual

Max Ambient Temp (°F):

120°F

Sensitivity:

20000 ohms

Voltage:

120v

Electrical Ratings (ALR):

43.2 A @ 120 VAC

Electrical Ratings (AFL):

7.2 A @ 120 VAC

3.75 A @ 240 VAC

Contact

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Compare Similar Products

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Max Ambient Temp (°F)
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CURRENT ITEM
Product Image of 750-MT-120, GuardDog Electronic Manual Reset Low Water Cutoff (Water)
750-MT-120, GuardDog Electronic Manual Reset Low Water Cutoff (Water)
SKU: 176207
(4)
Hot Water Boilers
Steam Boilers
Electronic
Manual
120°F
120v
Hot Water Boilers
Steam Boilers
Electronic
Automatic
120°F
120v
Hot Water Boilers
Steam Boilers
Electronic
Manual
120°F
120v
Hot Water Boilers
Steam Boilers
Electronic
Manual
120°F
120v

You May Also Need

PA-800, Probe Assembly for 750, 750-MT-120, PS800, PS801, PS850, PS851
SKU: 354081
McDonnell & Miller

Product Reviews

4.75 out of 4 reviews
100% would recommend this product
4.75
out of 4 Reviews
100% would recommend this product
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5 star
75%
4 star
25%
3 star
0%
2 star
0%
1 star
0%
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Showing 1-4 of 4 reviews

I would buy this again

Low water cut out switch for our heating boilers.
Chris
Hood River, Oregon
3 years ago
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I would buy this item again.

The wiring was different from the original, but the wiring diagram on the new one explained how to wire.
Keewanee
Libertyville, IL.
4 years ago
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Fast Shipping Excellent Product

Supply House offers great customer service.
David
Charleston WV
5 years ago
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Exact Fit Replacement

Easy to order and quick shipping.
RRR
San Antonio, TX
7 years ago
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