300-lb Electromagnetic Lock
300-lb Electromagnetic Lock - Image 2
300-lb Electromagnetic Lock - Image 3
300-lb Electromagnetic Lock - Image 4

E-941SA-300RQ

300-lb Electromagnetic Lock

The E-941SA-300RQ electromagnetic lock is the ideal way to secure a door against unauthorized entry. When power is applied to the electromagnetic lock, it creates an extremely strong magnetic field. The electromagnet is strongly attracted to the steel armature plate which is mounted on the secured door. Once the electromagnet is deactivated, the secured door will function normally without any residual magnetism.

  • product_icon
  • 300-lb (136kg) Holding force
  • No residual magnetism
  • MOV Surge protection
  • Anodized aluminum housing (US 28)
  • Suitable for cabinets, small enclosures, or pedestrian gates
  • Reversible installation for right- or left-swing doors
  • Adjustable mounting bracket
  • Complete mounting hardware for typical installations
  • Additional brackets available for easy mounting or atypical situations
  • Detachable faceplate for easy access to wiring
  • 12/24VDC Selectable
  • Lifetime limited warranty*

*Warranty applies in the USA and Canada only. Contact SECO-­LARM for details.

Holding Force300-lb (136kg)
Operating Voltage12/24 VDC ±10%
Current Draw420mA@12VDC, 210mA@24VDC
Operating Temperature14º~131º F (-10º~55º C)
Electromagnet Dimensions7-7/8″ x 1-3/8″ x 1″ (200 x 35 x 24 mm)
RoHS ComplianceYes
Armature Dimensions6″ x 3/8″ x 1-1/4″ (152 x 10 x 32 mm)
Weight3-lb 5-oz (1.5kg)
Case Quantity10 pcs
Product Information Sheet (PI) (pdf, 356KB)
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MANUAL (pdf, 657KB)
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Mounting Template (pdf, 71KB)
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FAQs

b

Delay in door releasing

  1. The electromagnet is fitted with a metal oxide varistor to prevent interference, so do not install a second diode.
  2. Ensure that the control device is connected between the power source and the positive terminal of the lock
b

Door does not lock.

  1. Check to make sure the wires are securely tightened to the terminal block.
  2. Check that the power supply is connected and operating.
  3. Make sure the rubber washer is installed and free from damage.
b

Door locks, but can easily be forced open.

  1. Make sure the electromagnet and armature plate are properly aligned.
  2. Make sure the contact surfaces of the electromagnet and armature plate are clean and free from rust.
  3. Check the power leads with a meter, and make sure 12VDC or 24VDC ispresent.
  4. Make sure the rubber washer is installed and free from damage.

Copyright ©2025 by SECO‑LARM U.S.A., Inc. All rights reserved. Supplier of Security Systems and Accessories Worldwide. The SECO‑LARM policy is one of continual development. For that reason, SECO‑LARM reserves the right to change specifications without notice. SECO‑LARM is not responsible for misprints or typographical errors.

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