Introduction
This document provides technical specifications and operational details for single and double acting spreader solenoids, specifically types GF1, GF2, GF3, and GF4, developed by Magnetbau Schramme. These solenoids are primarily used as actuation magnets for brakes in various applications.

Single Acting Spreader Solenoids (GF1 and GF2)
Function: These solenoids are used mainly in escalators and as replacements in older elevators. They consist of one electromagnet system that exerts a thrusting force, with the plunger returned by external force. An emergency manual control is included.
Characteristics: High force with short stroke, maintenance-free plunger support, and long service life. Can be installed in any position, with power transfer recommended only in axial direction.
Nominal Data: Supply voltage of 24 VDC or 230 VAC with a built-in rectifier, 40% duty cycle, insulation class "H", limiting temperature of 180°C, and IP 43 protection.

Technical Data for GF1 and GF2
Includes stroke length, weight, power consumption, and magnetic force at stroke start and end for various models (GF1 090, GF1 100, etc.).

Double Acting Spreader Solenoids (GF3 and GF4)
Function: Used in passenger elevators, these solenoids have two magnet systems operating in opposite directions. They are designed for low weight and fast operation, with an emergency manual control for simultaneous plunger movement.
Characteristics: High force with short stroke, corrosion-resistant galvanizing, and maintenance-free plunger support. Installation instructions are similar to single acting solenoids.
Nominal Data: Similar to single acting solenoids with the same voltage, duty cycle, insulation class, temperature, and protection specifications.

Technical Data for GF3 and GF4
Details include stroke length, weight, power consumption, and magnetic force for models like GF3 090, GF3 100, etc.

Conclusion
Magnetbau Schramme offers customized solutions for series projects, emphasizing the importance of contacting them for specific requirements as they do not stock standard products.