Complete Surface Mount Electric Strikes

Because no cut is required in the jamb, surface-mounted electric strikes have become a viable choice.

According to Trine, these BHMA Grade 1 rated electric strikes have each been tested to one and one-half million plus cycles. The 4800 and 4801 provide a holding force of 3,000- plus pounds. The 4850 provides a holding force of 1,500- plus pounds.

The Trine 4800, 4801 and 4850 lock mechanisms are two stainless steel U-shaped latches that form a rectangular pocket when the electric strikes are in the locked position. As the door closes, the Pullman latch, the SecureBolt and the SquareBolt retract as they slide over the latch fronts and extend into the pockets created by the electric strike’s latches.

The 4800 Series electric strikes operate using one field configurable solenoid and actuator cam that controls the latches and determines the mode of operation.

When configured to Fail Safe mode, the solenoid is continuously powered to lock the two latches keeping the door locked. When power is eliminated, the spring contracts, retracting the solenoid plunger. This movement rotates the Fail Safe actuator cam that depresses the locking collar. With the locking collar depressed, the two latches are free to release the latch or bolt, permitting the door to be open.

When configured to the Fail Secure mode, as the electric strike is momentarily powered, the solenoid plunger retracts into the solenoid body rotating the Fail Secure actuator cam, which in turn depresses the locking collar. When the locking collar is depressed, the two latches are free to swing outward and release the latch or bolt, permitting the door to be open.

The Trine Axion 4800 and 4801 come in one configuration where the built-in electronics automatically allow 12 through 24 volts AC or DC. The 4850 comes in one configuration with the ability to operate the solenoid using 11 through 28VDC. The built-in circuitry is designed to accommodate variations in voltage as well as provide protection against surge and kickback.

These electric strikes are nine inches tall with the opening centered in the body. The strike’s widths are 1-3/4”. The Trine 4800 and 4801 are ¾” thick and the 4850 is ½” thick.

Two mounting holes are horizontal ovals permitting precise inward and outward adjustments. To strengthen the installation of the 4800 Series electric strikes, Trine has patented an anchoring system. Up to four holes are drilled into the jamb at specific locations that correspond to the openings in the electric strike body. Then up to four anchoring system pins are installed into the openings in the strike body. When the electric strike is installed, the anchor pins slide into the jamb. These pins add additional mounting strength to resist lateral pressure.

The 4800 and 4801 come standard with a 1/8” steel spacer that can be used as the mounting template. The 4850 come standard with a 1/8” and ¼” spacers. The rear of the strike box is open in the 4800, 4801 and 4850. Adding one or more spacer(s), moves the electric strike closer to the exit device center case, increasing the acceptable depth for the Pullman Latch or latch bolt throw.

The three electric strikes come with two sealed crimp connectors, quick connect socket and wire assembly and the Fail Safe and Fail Secure spring/solenoid plungers and actuator cams.

For more information, contact your local locksmith wholesaler or:

HES, Inc., 22630 N. 17th Ave., Phoenix, AZ 85027. Telephone: 623-582-4626. Web Site:

Rutherford Controls Int’l Corp., 2697 International Parkway, Pkwy 5,Virginia Beach, VA 23452. Telephone: 800-265-6630. Web Site:

Trine Access Technology, 1440 Ferris Place, Bronx, NY 10461. Telephone: 718-829-2332. Web Site:

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