Spreader solenoid Elevator Brake Solenoids

high-performancecompactdouble-action

Elevator brake solenoids are linear spreader solenoids with short stroke and high magnetic force, designed to release block or drum brakes in elevator and escalator drives. They are available as single-acting or double-acting spreader solenoids to suit single- or dual-brake systems.

Functionality and variants

• Single-acting spreader solenoids: pushing solenoid actuators operating in one direction for brake release.
• Double-acting spreader solenoids: two solenoid systems in one housing pressing in opposing directions; commonly used in modern systems for increased safety and redundancy. Double-acting variants can include a manual release.
• Magnetic force profile: both types exhibit increasing magnetic force characteristics; coil design determines available duty cycles.
• Over-excitation mode: when operated with over-excitation (40% ED), the solenoid is energized at higher power during the actuation phase to achieve a high initial force to overcome the brake spring. An over-excitation rectifier reduces holding voltage once the magnet reaches end position, typically enabling an effective standard duty cycle of 80% (energy-saving operation while providing high initial attraction force).
• Acoustic and safety options: solutions to reduce switching noise (stop damper) and other options tailored to elevated safety requirements.

Benefits

• Short stroke combined with high magnetic force for compact, powerful actuation.
• Insensitivity to moisture and dust (suitable for harsh environments).
• Mountable in any position to fit various installation needs.

Technical data of the standard double spreader solenoid
Supply Voltage: 205 V DC; Nominal over-excitation duty cycle: 40% ED; Typical standard holding arrangement after over-excitation: 80% ED; Protection class (device and connector): IP 54.

• LED088000 (40% ED) — Diameter x Length: 88 x 120 mm; Stroke: 2 mm; Force (START): 450 N; Force (END): 700 N; Input power: 68 W.
• LED098000 (40% ED) — Diameter x Length: 98 x 136 mm; Stroke: 2.5 mm; Force (START): 590 N; Force (END): 1,100 N; Input power: 84 W.
• LED115000 (40% ED) — Diameter x Length: 115 x 140 mm; Stroke: 3 mm; Force (START): 750 N; Force (END): 1,050 N; Input power: 90 W.
• LED135000 (40% ED) — Diameter x Length: 135 x 165 mm; Stroke: 3 mm; Force (START): 1,260 N; Force (END): 1,800 N; Input power: 131 W.
• LED140000 (40% ED) — Diameter x Length: 135 x 225 mm; Stroke: 4 mm; Force (START): 1,500 N; Force (END): 3,000 N; Input power: 182 W.
• LED165000 (40% ED) — Diameter x Length: 165 x 250 mm; Stroke: 4 mm; Force (START): 2,800 N; Force (END): 3,750 N; Input power: 201 W.

Characteristics / technical specifications

• Brand: Kendrion.
• Primary application: release of block or drum brakes in elevator and escalator drives.
• Variants: single-acting and double-acting spreader solenoids (double-acting often used for increased safety and redundancy).
• Over-excitation capability for high initial actuation force (typical over-excitation: 40% ED then reduced holding voltage).
• Protection class (standard double spreader solenoid): IP 54.
• Options: stop damper for noise reduction; manual release on certain double-acting models; coil/duty-cycle variations depending on application.