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©2011 RUTHERFORD CONTROLS INT’L CORP. • WWW.RUTHERFORDCONTROLS.COM

USA: 2517 SQUADRON COURT, SUITE 104, VIRGINIA BEACH, VA 23453 • CANADA: 210 SHEARSON CRESCENT, CAMBRIDGE, ON  N1T 1J6 

PHONE: 1.800.265.6630   519.621.7651 • FAX: 1-800.482-9795   519.621.7939 • E-MAIL: [email protected]

I N S T A L L A T I O N

8375

Surface MicroMag

®

Electromagnetic Lock

®

IS8375

PCN110045

R07/11SH

Pre-Installation Instructions

1.

This product must be installed according to all applicable
building and life safety codes. 

2.

Due to the variety of mounting configurations available with
this product, a survey and assessment of the physical area
in which the product will be installed must be performed. 

3.

The door frame must be inspected and deemed structurally
sound prior to installation of the electromagnetic lock. The
structural integrity of the mounting surfaces must be strong
enough to meet or exceed the holding force of the product. 

4.

The product must be protected from potential damage due
to intruders or tampering. 

5.

The product should be installed in a location that will not
hinder or create a potential safety hazard to authorized
personnel accessing the protected area. 

6.

Because electromagnetic locks are used in a variety of
applications and different door frame configurations, an
experienced installer with knowledge of this product must
make a determination of the optimal mounting method for
this specific application. 

7.

The components, hardware, installation instructions and
mounting template included with this product are intended
for use on outswinging doors. 

8.

Do not install this product on the exterior of buildings. 

9.

Do not use as a doorstop. This will void warranty.

10

. Separate accessories not included with this product must be

used in the following applications: 

• Inswinging doors 
• Narrow head jamb situations or center-hung doors 
• Wherever there is insufficient space on the door frame

header to mount the lock

• Glass or Herculite doors that do not have a door frame 
• Hollow metal or wood frames where the door stop is

not thick enough to allow the product to be installed 

• Wherever an obstruction in the door prevents 

installation of the armature plate at a proper height 

• Doors that do not permit the armature plate to be 

mounted low enough to meet the magnet surface 

Refer to the Product Accessories Guide section of the
Installation Instructions for further information. 

11.

Installation of this product should be done by an

experienced installer with knowledge of this product. 

NOTE:

It is highly recommended that thread locking compound

be applied to all screws during installation to reduce chance of
screws loosening over extended time.

PLEASE DELIVER ALL INSTALLATION INSTRUCTIONS TO 

THE END-USER UPON COMPLETION OF THE INSTALLATION.

Fig. 1.
8375 Mounting 
Plate Removal

Fig. 2 – 8375 Voltage Selection Jumper Setting

12VDC Operation

24VDC Operation

(Factory Setting)

Electromagnetic lock installations must conform to local fire codes,
National building codes and Life Safety Codes.

Mounting
Bracket

Releases captive
mounting screws

Summary of Contents for Surface MicroMag 8375

Page 1: ...he components hardware installation instructions and mounting template included with this product are intended for use on outswinging doors 8 Do not install this product on the exterior of buildings 9 Do not use as a doorstop This will void warranty 10 Separate accessories not included with this product must be used in the following applications Inswinging doors Narrow head jamb situations or cent...

Page 2: ...etic lock armature plate and associated hardware to disengage and fall causing serious bodily injury and property damage Rutherford Controls Int l Corp will not be liable to the installer purchaser end user or anyone else for damage or injury to person or property due to improper installation care storage handling maintenance inspection abuse misuse or act of God or nature involving this product o...

Page 3: ...om the lock Ensure that switching devices are interrupting the DC power and not the AC power supply voltage Ensure rubber washer on armature plate mounting bolt has not been removed or damaged Check that switching device interrupts the positive wire and not the negative wire see Fig 3 Remove any Diodes or other suppression devices that may be installed While some heat rise is normal for the 8375 e...

Page 4: ... lock centered on the frame between the doors NOTE Use of split armature plates will reduce holding force For use with doors that do not permit the armature plate to be mounted low enough to meet the magnet surface Eg Some aluminum framed commercial glass doors The armature holder can be mounted to whatever frame is available and the armature plate in turn mounted to the holder Available in both f...

Page 5: ... 100 24 20 18 18 16 16 14 12 150 22 18 16 16 14 14 12 10 200 20 18 16 14 14 12 12 10 250 18 16 14 14 12 12 12 10 300 18 16 14 12 12 12 10 400 18 14 12 12 10 10 500 16 14 12 10 10 750 14 12 10 10 1000 14 10 10 1500 12 10 Total One Way Length of 1 4A 1 2A 3 4A 1A 1 1 4A 1 1 2A 2A 3A Wire Run ft 100 20 18 16 14 14 12 12 10 150 18 16 14 12 12 12 10 200 16 14 12 12 10 10 250 16 14 12 10 10 10 300 16 12...

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