Description
***Currently on backorder – 4 week lead time***
The BLS-Series Bilge Level Switch is a rugged, slosh-shielded float switch designed for reliable bilge water monitoring and alarm applications on vessels of all sizes. Built to withstand the demanding conditions of marine environments, this switch ensures dependable operation in turbulent, contaminated liquids, including seawater, fuel, hydraulic fluid, and lubricating oils.
Its compact and low-profile design makes it easy to install in tight or confined bilge spaces. The switch comes pre-mounted on a corrosion-resistant stainless steel bracket, allowing for fast and secure installation at the user’s desired level. This bracket mount also adds mechanical stability in high-vibration environments like engine rooms or near pumps, enhancing its long-term reliability.
A key feature of the BLS-Series is its slosh shield, which protects the float mechanism from false triggering caused by wave action, splashing, or motion of the vessel. This makes it especially useful in harsh marine conditions where liquid movement is constant and unpredictable. Whether it’s installed on a commercial ship, fishing vessel, yacht, or industrial barge, this float switch provides accurate, noise-resistant level detection that keeps your systems responsive and safe.
The internal reed switch mechanism is rated for reliable, low-voltage operation, making it compatible with most marine bilge alarm and pump systems. It can be wired easily into existing float-switch circuits or integrated into broader marine monitoring and automation systems. Built to support standard 12V/24V DC systems, it offers stable switching performance even in electrically noisy or corrosive environments.
Constructed with marine-grade materials, the BLS-Series float and internal components are resistant to corrosion, fuel exposure, and fouling, ensuring extended service life with minimal maintenance. Whether monitoring for bilge water accumulation, leak detection, or fluid overflow, this switch delivers consistent and responsive performance under demanding conditions.
Ideal for bilge monitoring, fluid leak detection, and sump-level control, the BLS-Series is trusted by marine engineers, shipbuilders, and boat owners for its compact footprint, rugged construction, and long-term reliability in the harshest marine environments. When safety, durability, and accuracy are required below deck, the BLS-Series Bilge Level Switch delivers dependable liquid level sensing you can trust.
| Part # | Reed Switch | Dry State | Price |
| BLS-271 | 100 VA SPDT | N.O. & N.C. | $120.00 |
Dry State: The condition of the reed switch when the tank is dry.
SPDT: Single Pole Double Throw
| Operating Temp | Maximum Pressure | Float Spec. Gravity |
| -40°F to 180°F (230°F in oil) | 150 PSI | .40 |
| Thread | Float | Lead Wires |
| N/A | 1.90″ diameter | 18 AWG Seoprene 105 SJE00W 6ft |
