Keller 1820-28-A3 External Surge Protector

Lightning/surge protection of power supplies, readouts, and PLCs.

This product is an accessory for the following products:

Keller Acculevel Submersible Level Transmitter
Keller Acculevel Submersible Level Transmitter

Level transmitter submersible to 900 feet of water with RS485 and choice of 4-20mA, 5VDC, 10VDC or SDI-12 ouput.

Some Models in Stock
Starting at $541.50
Keller Econoline General Purpose Pressure Transmitter
Keller Econoline General Purpose Pressure Transmitter

Up to 10,000 PSI pressure transmitter with 1/4in-18NPT male process connection and 4-20mA output.

Some Models in Stock
Starting at $135.00
Keller Levelgage Submersible Level Transmitter
Keller Levelgage Submersible Level Transmitter

Level transmitter submersible to 900 feet of water, UL/cUL IS-approved, with choice of 4-20mA, 5VDC, or 10VDC ouput.

Some Models in Stock
Starting at $401.50
Keller LevelRat Submersible Level Transmitter
Keller LevelRat Submersible Level Transmitter

Non-fouling, UL/cUL IS-approved level transmitter specifically designed for sewage lift stations for depths up to 100 feet of water.

Some Models in Stock
Starting at $611.50
Keller Microlevel Submersible Level Transmitter
Keller Microlevel Submersible Level Transmitter

Small diameter level transmitter submersible to 900 feet of water with RS485 and 4-20mA ouputs.

Some Models in Stock
Starting at $711.50
Keller Nanolevel Submersible Level Transmitter
Keller Nanolevel Submersible Level Transmitter

Low pressure level transmitter submersible to 10 feet of water with RS485 and 4-20mA ouputs.

Starting at $783.25
Keller Preciseline High Accuracy Pressure Transmitter
Keller Preciseline High Accuracy Pressure Transmitter

Up to 15,000 PSI precision pressure transmitter with RS485 and choice of 4-20mA, 5VDC, 10VDC or SDI-12 output.

Starting at $525.00
Keller Valueline High Accuracy Pressure Transmitter
Keller Valueline High Accuracy Pressure Transmitter

High accuracy pressure transmitter, UL/cUL certified IS-approved for hazardous locations, NSF/ANSI 61 & 372 certified for drinking water.

Some Models in Stock
Starting at $400.00
Keller Digital Pressure Calibrator Kits
Keller Digital Pressure Calibrator Kits

Economical hydraulic and pneumatic calibration kits.

Some Models in Stock
RETIRED
Keller Econoline General Purpose Pressure Transmitter
Keller Econoline General Purpose Pressure Transmitter

Up to 10,000 PSI pressure transmitter with 1/4in-18NPT male process connection and choice of 4-20mA or 0.5 to 4.5VDC ouput.

RETIRED