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LF42H

Product catalog summary

Overview: This document provides technical specifications and operational details for the LF40-01 and LF42 series pressure switches, which are used in various applications such as food waste disposers, swimming pool pumps, and water supply systems.

LF40-01 Pressure Switch:

Action Types: Momentary and Alternate actions.
Operating Pressure Range: 0.25 to 15 psi for momentary action; 1.0 to 1.8 psi for alternate action.
Operating Temperature Range: -10℃ to +85℃.
Electrical Ratings: Options include 0.1A, 3A, 5A, 15A, 16A, and 21A at 125/250VAC.
Connection Types: Includes 4mm OD tube side entry, NPT connections, and blade terminals.
Applications: Used with air buttons for remote control in various equipment.

LF42 Series Pressure Switch:

Models: LF42H (high pressure protection) and LF42L (low pressure protection).
LF42H Specifications: Cut-off pressure at 2.5bar±0.5bar, cut-in pressure at 1.5bar±0.5bar, voltage 250V AC, current 16A.
LF42L Specifications: Cut-off pressure ≤0.1 bar, cut-in pressure ≥0.2 bar, voltage 250V AC, current 16A.
Durability: Over 40,000 cycles.
Applications: Protects water supply systems by stopping pumps when pressure thresholds are met.

Key Features:

Both series offer robust protection for equipment by managing pressure levels effectively.
They are designed to prevent damage to pumps and circuits by cutting off power when necessary.

Catalog excerpts

Water dispensers high and low pressure switch 27 LF42 series pressure switch is used in water supply pressure protection of water inlet. This series include two models LF42H(high pressure protection) and LF42L(low pressure protection). LF42H is the high pressure protection switch model. If the pressure of the pressure vessel transferred reaches the setting value while the vessel is full filled with water, the switch will cut off the circuit to make the pump stop. So the pump will not be damaged. LF42L is the low pressure protection switch. If the pressure of water inlet lower than set value, RO will not work and keep dewatering, then the switch will cut off the circuit to make the pump stop. It can prevent the booster pump still working without water which may lead to the damage of the circuit. If the pressure of the water inlet returns to the lowest set volume, the pump will work again. Dimension in:mm Specification Model Proof pressure Working temperature Switch type Microswitch , normal close Microswitch , normal open Electrical rating 4.8*0.8 blade A quarter fast interface A quarter fast interface

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