UNS-MS1/8-BN25 Brass Level Switch from Barksdale

UNS-MS1/8-BN25 Brass Level Switch from BarksdaleThe Barksdale UNS-MS1/8-BN25 is a compact, rugged single-point float level switch engineered for general liquid level detection in tanks, containers, hydraulic units, and oil storage systems. It features a brass stem and Buna-N (NBR) float material, with a G 1/8″ mounting thread and IP54 protection. The switch is available with a single contact (SPST/SPDT) and a reversible output logic (NO ? NC by rotating the float). It supports electrical ratings up to 230 VAC / DC at 2 A (40 VA) in certain variants. 

The UNS-MS1/8-BN25 is versatile for installation from the top or bottom of vessels and is widely used in oil, hydraulic, and industrial fluid systems for reliable level monitoring. 

Features

UNS-MS1/8-BN25 Brass Level Switch Features:

  • G1/8" - Mounting thread
  • 1 switch contact
  • Mounting through top or through bottom

Specifications

UNS-MS1/8-BN25 Brass Level Switch Specifications:

SpecificationDetails
Stem and Mounting ThreadMS 1/8 = Brass G1/8 MS 1/8 NPT = Brass 1/8" NPT
FloatBN 25 = Buna N, ? 25 mm
Max. Operating Pressure15 bar (Float / +20 °C)
Max. Operating Temperature-20 °C to +100 °C (Oil) -20 °C to +80 °C (Water)
Min. Fluid Specific Gravity0.57 g/cm3
Mounting PositionVertical, ±30°, through top or bottom
Protection ClassIP54
Electrical ConnectionPVC cable, max. 3 x 0.34 mm2 Lengths: 1 m / 3 m / 5 m
Contact Mode1 - SPST (NO) 2 - SPST (NC) 3 - SPDT
Max. Contact RatingNO / NC: 230 V AC/DC, 2 A, 40 VA/W SPDT: 150 V AC / 100 V DC, 0.2 A, 3 VA/W
WeightApprox. 40 g

Applications

UNS-MS1/8-BN25 Brass Level Switch Applications:

General level measurement for

  • Tanks
  • Containers
  • Storage tanks for oil
  • Hydraulic power packs

Q & A

Q&A Section with Expand/Collapse Icons

UNS-MS1/8-BN25 Brass Level Switch Q & A

+ What is the Barksdale UNS-MS1/8-BN25 Brass Level Switch used for?
The UNS-MS1/8-BN25 is designed for reliable single-point liquid level detection in tanks, reservoirs, hydraulic systems, and oil storage units. It helps automate filling or draining processes and provides level monitoring.
+ What materials are used to construct this level switch?
The switch features a brass stem and a Buna-N (NBR) float, making it suitable for non-corrosive liquids such as oils, coolants, and hydraulic fluids.
+ What is the mounting connection type and size?
The UNS-MS1/8-BN25 uses a G 1/8″ threaded process connection, which allows for easy top or bottom mounting.
+ What is the maximum electrical rating of the UNS-MS1/8-BN25?
The switch supports up to 230 VAC/DC at 2 A (40 VA) depending on the selected variant, allowing integration with various control systems.
+ Can the switch be mounted in any orientation?

Yes. The design allows for top or bottom installation, providing flexibility for different tank configurations.

Downloads

Download Barksdale UNS-MS1/8-BN25 Brass Level Switch Datasheet 

 

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