Folger Adam 310/4 Electric Strike: Specs and Installation Guide

310/4 electric strike is the Folger Adam designation for one of the most widely installed surface-mounted electric strikes for rim panic exit devices in commercial access control applications. The Folger Adam 310/4 has been a standard specification on rim device-equipped single doors for decades, functioning as a direct replacement for installations previously carrying Von Duprin 3140 hardware. Now manufactured under the HES (Hardware Electronic Systems) brand within the ASSA ABLOY group, the 310/4 continues to ship to commercial projects under its original designation. This guide covers the confirmed specifications, wiring, fail safe versus fail secure selection, and the specific exit device compatibility that defines where the 310/4 belongs on a hardware schedule.

What the "310/4" Designation Means

The Folger Adam 310 Series covers electric strikes for a range of exit device latch configurations. The suffix after the slash indicates the specific latch type:

310/4: For rim exit devices with a Pullman latch. The most commonly ordered variant and the standard specification for Von Duprin 98/99 Series rim devices, Sargent 8800 Series, and Corbin Russwin ED5200 rim configurations with a Pullman latch projection.

310/2: For surface vertical rod and concealed vertical rod exit devices (covered in the next blog). The 310/2 is the companion product where vertical rod hardware appears on the door.

Understanding this distinction prevents the most common ordering error on exit device electric strike projects: ordering the 310/4 when the door has vertical rod hardware instead of a rim device.

Confirmed Technical Specifications

The Folger Adam 310/4 specifications confirmed from authorized product data:

• Application: Rim exit devices with Pullman latch

• Static strength: 1,500 lbs

• Dynamic strength: 70 ft-lbs

• Cycle rating: 500,000 cycles

• Electrical: 12VDC or 24VDC, field selectable

• Current draw: Similar to HES 9400 series (0.45A at 12VDC, 0.25A at 24VDC continuous)

• Function: Fail safe or fail secure, field selectable

• Mounting: Surface mounted on door frame, no frame cutting required

• Listing: UL 1034 listed

• Compatibility: Replaces Von Duprin 3140 as direct substitute

The 310/4 is non-handed. It installs on the frame surface and aligns with the Pullman latch from the rim exit device on the door. A spacer plate accommodates door gap variations.

Fail Safe vs Fail Secure on the 310/4

The 310/4 is field selectable between fail safe and fail secure. This selection is made during installation, not at the factory. The correct selection is determined by the door's code and security requirements:

Fail safe (unlock on power loss): The strike releases when power is removed. Correct for egress path doors, stairwell entries, and fire alarm-integrated doors where the door must open freely when power fails.

Fail secure (lock on power loss): The strike stays locked when power is removed. Correct for server rooms, pharmacies, and restricted access areas where the locked state is the safe default during a power failure.

For a complete breakdown of which function applies to each occupancy type, see the fail safe vs fail secure guide on this site.

Why American Locksets for 310/4 Projects

The Folger Adam 310/4 ships as part of the complete electric strikes section at American Locksets from authorized distribution. For projects where the 310/4 installs on doors also carrying exit hardware from Von Duprin, Sargent, or Corbin Russwin, all components ship on one order. Call 877-471-4870 to confirm function selection and compatibility before ordering.

Conclusion

The Folger Adam 310/4 is the surface-mounted electric strike for rim exit device applications, rated to 1,500 lbs static strength, 500,000 cycles, and field selectable between fail safe and fail secure on 12 or 24VDC. It replaces Von Duprin 3140 hardware directly. The 310/2 variant covers vertical rod exit device applications. American Locksets stocks both from authorized distribution with same-day shipping. Call 877-471-4870 to confirm compatibility.

FAQs

What is the Folger Adam 310/4?

 A surface-mounted electric strike for rim exit devices with a Pullman latch, rated 1,500 lbs static strength and 500,000 cycles.

What is the difference between 310/4 and 310/2? 

310/4 is for rim devices with Pullman latch. 310/2 is for vertical rod exit devices. The slash number identifies the compatible latch type.

Is the 310/4 fail safe or fail secure?

 Both. It is field selectable between fail safe and fail secure during installation without returning to the factory.

What does the 310/4 replace?

 It is a direct replacement for the Von Duprin 3140 electric strike, using the same frame preparation dimensions.

Published by the American Locksets Hardware Team. Authorized Dealer, Est. 2001, Monroe, NY.