Tsurumi LB-800A Automatic Dewatering Pump 1 HP
- 1 HP, 115 V
- 80 gpm flow
- Automatic relay switch, runs one minute after water clears
- 50 ft cord
- Urethane impeller, dual silicon carbide seals
- 2-year warranty, UL and CSA
Updated 20 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A rugged automatic dewatering pump for job sites and tight pits that runs itself on electrodes instead of a float. Maximum head is not listed, so check the lift you need before buying.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B008TTC08YModel: LB-800ACategory: Sump Pumps
Overview
Tsurumi built this submersible pump for construction dewatering with an electrode relay instead of a float. When water touches the electrodes it starts, and after the water clears it runs one more minute before shutting off, which suits narrow pits.
Automatic operation in tight spaces where a float would jam is the reason to choose it. Wear parts and seals are built for gritty site water. Head height and solids handling are not stated in the listing.
Who it's for
Site crews who need a pump to cycle on its own through a shift are the core users. A household sump pit is better served by a residential sump pump.
Pros and cons
- Electrode relay, no float needed
- Abrasion-resistant impeller and plates
- Dual silicon carbide seals
- Top discharge cools the motor
- Maximum head not listed
- Solids size not listed
- Heavy to carry by hand
Performance notes
Flow falls as lift height rises, so the job's head decides real output. The top discharge passes water over the motor, which allows long runs at low water and some dry running. Electrode cleanliness affects when the relay triggers.
Specifications
| Brand | Tsurumi Pump |
|---|---|
| Model | LB-800A |
| Dimensions & fit | |
| Item Dimensions L X W X H | 17 x 10 x 9 inches |
| Item weight | 30 pounds |
| Capacity & performance | |
| Flow Rate | 80 gpm |
| Power & efficiency | |
| Horsepower | 1 |
| Power Source | Corded electric, 50 ft cord |
| Voltage | 115 volts |
| Construction & materials | |
| Material Type | Urethane impeller and wear plates, dual silicon carbide mechanical seals |
| Color | Port |
| Included components | |
| Included Components | item |
| Warranty & support | |
| Manufacturer Warranty Description | 2-year warranty, UL and CSA certified |
| Other details | |
| Specific Uses For Product | Dewatering |
| Operation mode | Automatic relay switch with electrodes, one minute run-on |
| Discharge | Top discharge |
| Product Style | Above Ground |
Frequently asked questions
How do I keep the Tsurumi LB-800A relay working?
The relay starts when water contacts the electrodes on the bottom, so keeping them free of mud and debris helps it trigger. The listing gives no other maintenance steps.
How does the Tsurumi LB-800A turn on automatically?
Its relay switch turns on when water touches the electrodes and runs for one minute after the water clears them.
Can the Tsurumi LB-800A run dry?
The top discharge design gives it extended dry-run capability and continuous duty at low water levels.
How long is the Tsurumi LB-800A cord?
It comes with a 50 ft cord.