F59H-6C Johnson Controls LIQUID LEVEL Control

Overview

The Johnson Controls F59H-6C is a weight-operated liquid level control switch designed to maintain precise fluid levels by starting an electric motor on liquid level rise and stopping it when the level drops. Supplied with an external mounting bracket for easy installation, this heavy-duty control is engineered to provide reliable sump pump and open tank operation in commercial and industrial HVAC and plumbing environments.

Features

• Weight-operated mechanism utilizing two specialized weights and a cable for accurate level activation.
• High contact force maintained up to the contact break point for extended switch life and reliability.
• External mounting design equipped with a fixed mounting bracket that can be reversed in the field.
• Factory set and sealed switch block ensuring hassle-free installation without the need for field adjustments.
• Built-in external adjustment screw to easily fine-tune the counterbalance spring tension.

Specifications

• Brand: Johnson Controls
• Model / MPN: F59H-6C
• Switch Type: DPST (Double-Pole, Single-Throw)
• Electrical Rating: 2-pole contact unit rated at 1 hp, 120/240 VAC
• Controlled Liquid: Water
• Housing Type: Heavy-duty metal cover with screw assembly
• Maximum Switch Temperature: 140°F (60°C)
• Maximum Liquid/Weight Temperature: 150°F (66°C)
• Dimensions: Approximately 7 x 6 x 5 inches
• Weight: 3 lbs

Applications

• Designed for liquid level control in commercial, residential, and industrial sumps.
• Used as an operating control to manage automatic sump pump cycles.
• Suitable for open tank (tank filling) applications by adjusting the switch rotation.
• Ideal for incorporation into integrated building automation and HVAC system fluid monitoring configurations.