Trine 3478 Series - 4-7/8" x 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$210.00
$144.98
Trine 3478 Series - 4-7/8" x 1-1/4" Electric Strike for Cylindrical Locks

Trine 3478 Series - 4-7/8" x 1-1/4" Electric Strike for Cylindrical Locks

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Model: 3478-24DC-32D
$210.00
$144.98
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$210.00
$144.98
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TRINE 3000 SERIES ELECTRIC STRIKE

STANDARD FEATURES

4-7/8" x 1-1/4"
Mortise Type - 1" backset (Smallest in the Industry)
Durability - 500,000 Life Cycles
Holding Force - 1,200 Pounds (Static Force)
-70 ft-lb (Dynamic Force)
All stainless steel locking parts
Solid Cast Latch - Stainless Steel
Cavity: Width 5/8", Height 1-1/8", Depth 1/2"
Non-handed
Heavy-duty latch spring
Silent Operation
Intermittent Duty with the Standard versions
Intermittent and Continuous Duty with the LC versions
Micro Solenoid assembly
Fail-Secure:(standard action) unlocks with power
Fail-Safe: RS (reverse action) unlocks when power is off

 

Manufacturer Resources

Product Specs

Series:
3478
Product Group:
Electronic Access Controls
Product Subgroup:
Electric Strikes
Product Type:
Electric Strikes
Subcategory:
Electric Strikes
Commercial/Residential:
Commercial
Electronic:
Yes
Lock Type:
Cylindrical
Outdoor Rated:
No
Face Plate:
4-7/8"
Fire Rating:
No
Product Category:
Electronic Access Controls
Department:
Door Hardware

Trine 3478-24DC-32D – Frequently Asked Questions

1) Will the Trine 3478 electric strike fit a standard ANSI 4-7/8 inch strike prep?
The 3478 uses a 4-7/8 inch by 1-1/4 inch faceplate, the standard ANSI cutout, so it drops into a jamb already prepped for that size. It's a mortise-type strike with a 1 inch backset, the shallowest in the industry, which matters when the jamb depth behind the prep is tight. The keeper cavity measures 5/8 inch wide, 1-1/8 inch high, 1/2 inch deep, so the cylindrical latchbolt has to sit within that pocket.
2) Does the Trine 3478 work with a cylindrical lockset or do I need a mortise lock strike?
Cylindrical locks are what the 3478 is built for. It releases the latchbolt of a knob or lever cylindrical lockset, and the strike body itself mortises into the frame with a 1 inch backset. For a mortise lock instead, the Von Duprin 6210 is a mortise-lock strike, and the Von Duprin 6400 is a modular body that handles either mortise or cylindrical.
3) Should I order the fail-safe or fail-secure version of the Trine 3478?
Fail-secure is the standard action: the strike stays locked when power drops and unlocks only when energized. That's the usual pick for an exterior or tenant door, since the mechanical lever or key still gets you out from the inside. Fail-safe is the RS reverse-action build, unlocked whenever power is off, which is what an egress or stairwell opening under a fire alarm release typically calls for. Both are stocked, and it is chosen at order time, not switched in the field.
4) Can the Trine 3478 electric strike be energized continuously, or only in short bursts?
Standard 3478 versions are intermittent duty, meaning they're meant to be pulsed on release, not held energized. If the application keeps the strike powered for long stretches (a fail-safe door held unlocked during business hours, for instance), order the LC version, which is rated for both intermittent and continuous duty. Getting this wrong cooks the solenoid.
5) Can I install a Trine 3478 electric strike on an exterior gate or an outdoor door?
Not an outdoor-rated strike, so keep the 3478 on interior openings or somewhere protected from weather. For a gate or exposed application, the Camden CX-ED1959 Series is outdoor rated.
6) My jamb has no strike cutout at all. Is the Trine 3478 the right choice, or do I need a no-cut strike?
The 3478 is a mortise-type body that has to sit inside the frame, so the jamb needs to be cut for the 4-7/8 by 1-1/4 faceplate and a pocket behind it. Its 1 inch backset is the shallowest going, which helps in a shallow frame, but it is still a cut-in job. If you can't cut the jamb, the Locknetics NC450 is a no-cut strike built for that situation.
7) I need to know whether the door is latched. Does the Trine 3478 monitor the latch?
The Trine 3478 is described by its holding force, life cycles and solenoid operation rather than by a monitoring output. If the access control system needs a latch status contact, the Dortronics 3300 Series includes a latch bolt sensing switch and runs 12/24 VDC on an ANSI 4-7/8 inch by 1-1/4 inch prep, the Hager 2945 includes a latchbolt monitor, and the Camden CX-ED1799L-8 is a dual monitor Grade 1 strike.
8) Is there another 4-7/8 x 1-1/4 electric strike that fits the same ANSI jamb prep?
The Trine 3478 uses a 4-7/8 inch by 1-1/4 inch faceplate. The Dortronics 3300 Series uses a strike plate for ANSI prep at 4-7/8 inch by 1-1/4 inch and runs 12/24 VDC with a latch bolt sensing switch. On aluminum jambs, the Adams Rite 7100 Series has a flat faceplate at 1-1/4 inch by 4-7/8 inch and the Adams Rite 7160 uses the same faceplate size; the Adams Rite 7170 carries that faceplate for hollow metal and wood jambs.
9) Which electric strike is rated ANSI Grade 1 if the Trine 3478 does not meet the spec?
When the drawing calls out ANSI Grade 1, the Alarm Controls AES-100 is a Grade 1 heavy duty electric strike, the HES Folger Adam 310-1(X) strike body is Grade 1 and handles 1/2 inch, 5/8 inch or 3/4 inch throw latchbolts, and the Camden CX-ED1410 and CX-ED1420 are Grade 1 ANSI fire-rated universal strikes. The Camden CX-ED1799L-8 is a Grade 1 dual monitor fire-rated strike shipped with eight faceplates, which is useful when one part number has to cover several jamb types across a facility.
10) Will the Trine 3478 work on a door with a rim exit device or vertical rods?
The Trine 3478 is a mortise-type strike for cylindrical locks with a 1 inch backset and a cavity of 5/8 inch wide by 1-1/8 inch high by 1/2 inch deep, which is latchbolt geometry, not exit device geometry. For an exit device opening, the SDC 30-4 Series is a rim mount strike for a 3/4 inch Pullman latchbolt in stainless steel, the Hager 2945 is a fire-rated rim exit strike, and the HES Folger Adam 310-4-2 is a complete Grade 1 electric strike pac for surface vertical rods.
11) What is the equivalent of the Trine 3478 electric strike for a fire-rated opening?
The Trine 3478 electric strike carries no fire rating, so it is not the part for a labeled opening. For a fire-rated door with a cylindrical lockset, the Adams Rite 7240 is a fire-rated electric strike for cylindrical locksets with 5/8 inch latchbolt projection, and the Von Duprin 4211 32D is a fire-rated Grade 1 electric strike for cylindrical locks with 12/24 VDC field-selectable operation. The Hager 2930 is another fire-rated Grade 1 strike, and it accepts either cylindrical or mortise locks with 12/24 VDC dual voltage.
12) Which electric strike should I use if the door has a mortise lock instead of a cylindrical one?
The Trine 3478 is built for cylindrical locks. When the opening has a mortise lockset, the Securitron MUNL Mortise UnLatch is a Grade 1 fire-rated strike made for that application, and the Von Duprin 6210 is a heavy duty Grade 1 strike for mortise locks running 24 VDC fail-secure with a UL 10C fire rating. The Von Duprin 6400 32D is a modular Grade 1 strike that covers mortise or cylindrical locks in fail-secure, satin stainless steel.
13) The Trine 3478 fail-safe and fail-secure are ordered as separate parts. Is there a strike that can be switched in the field?
On the Trine 3478, fail-safe and fail-secure are chosen at the time of order, along with 12 VDC or 24 VDC. If you want one part number that can be set either way on site, the Hager 2925 is field reversible fail safe/fail secure with a 5/8 inch latch, and the Hager 2928 offers the same field reversible operation. The Von Duprin 4211 32D is field-selectable for 12 or 24 VDC. For a stocking kit that covers a labeled opening as well, the Hager 2945 is a fire-rated rim exit strike with field selectable fail safe/fail secure and a latchbolt monitor.
14) Can the Trine 3478 be used on an exterior gate?
The Trine 3478 is not outdoor rated. For a gate or other exterior application, the Camden CX-ED1959 Series is an outdoor rated electric gate strike. Note that the CX-ED1959 carries no fire rating either, so it is an exterior answer rather than a labeled-opening answer.
15) What can I install without cutting the frame, since the Trine 3478 needs a mortise cavity?
The Trine 3478 is a mortise type strike and needs a cavity 5/8 inch wide, 1-1/8 inch high and 1/2 inch deep at a 1 inch backset. Where cutting the frame is not an option, the Locknetics NC450 is a no cut electric strike. The Camden CX-ED1689L-4 is a fire-rated universal low profile strike supplied with four faceplates, which gives more room to match an existing prep.
16) Which strike matches a 5/8 inch latchbolt throw the way the Trine 3478 does?
The Trine 3478 has a cavity 5/8 inch wide by 1-1/8 inch high by 1/2 inch deep with a solid cast stainless steel latch. Peers built around a 5/8 inch latchbolt include the SDC 15 Series with 12/24 VDC operation, the SDC 45F fire-rated strike with a radius corner faceplate, the Hager 2925 with a 5/8 inch latch and field reversible operation, and the Adams Rite 7240, fire rated for cylindrical locksets at 5/8 inch latchbolt projection. For a different throw, the SDC 25 Series covers 1/2 inch.
17) What voltage does the Trine 3478 electric strike run on?
12 VDC and 24 VDC are both available, selected when you order rather than set in the field, so match it to the access control power supply feeding the door. Every finish is offered in each voltage. If you'd rather have one strike that takes either supply, the SDC 15 Series and the Dortronics 3300 Series both run 12/24 VDC, and the Von Duprin 4211 is field-selectable between the two.
18) Is the Trine 3478 strike handed, and does it matter which way my door swings?
Non-handed. One 3478 covers a left or right hand opening, so a property manager stocking spares for a building only needs one part on the shelf instead of two.
19) How much force will a Trine 3478 electric strike hold, and will it stand up to a high traffic door?
1,200 pounds of static holding force and 70 ft-lb dynamic, with a 500,000 cycle durability rating. The locking parts are all stainless steel and the latch is a solid cast stainless piece, with a heavy-duty latch spring. That's a commercial-duty strike, suited to apartment entries, offices, and other openings cycled hard all day.
20) Can I decide fail-safe versus fail-secure in the field on the Trine 3478?
No, it's fixed by the model you order: the standard build is fail-secure, and the RS reverse-action build is fail-safe. Where a spec calls for one strike that can be flipped either way on site, the Hager 2925, 2928 and 2930 are field reversible fail safe/secure.
21) Is there a simpler or lower-cost electric strike than the Trine 3478 for a light-duty interior door?
For a basic interior opening, the SDC 15 Series is a value strike for a 5/8 inch latchbolt with 12/24 VDC operation, and the SDC 25 Series is a value strike for a 1/2 inch latchbolt. The RCI 15BS is an economy strike for a special offset latch entry with fail-secure operation only, so confirm the latch geometry before you order it. None of these three carry the fire rating the RCI 15BS is explicitly listed without, so keep them off labeled openings.
22) Which strike holds up best on a high-traffic entrance compared with the Trine 3478?
The Trine 3478 is rated for 500,000 life cycles with 1,200 pounds of static holding force and all stainless steel locking parts. Peers carried as heavy duty include the Alarm Controls AES-100, a Grade 1 heavy duty strike, the Locknetics MDS100 US32D and MS100 US32D heavy duty strikes, and the Von Duprin 4211 32D and 6400 32D, both Grade 1 heavy duty. The Von Duprin 6400 32D is modular and takes mortise or cylindrical locks in fail-secure.
23) Are the HES 1500 and 1600 items a substitute for a Trine 3478 strike?
They are not. The HES 1500 and HES 1600 items are electric strike accessories for those Grade 1 fire-rated series, not complete strikes, so ordering one in place of a Trine 3478 leaves the opening without a strike body. If a complete fire-rated Grade 1 unit is what the job needs, the Von Duprin 4211 32D for cylindrical locks or the Securitron MUNL for mortise locks are whole strikes.
24) Does the Trine 3478 come in finishes to match brass and bronze hardware, or do I need a different brand?
The Trine 3478 is offered in 605 bright brass, 606 satin brass, 613 oil rubbed bronze, 629 bright stainless steel and 630 satin stainless steel across both 12 VDC and 24 VDC. Several comparable strikes are carried in a single stainless finish - the Locknetics CS450-32D, MDS100 US32D, MS100 US32D and NC450 US32D are all 32D, and the Von Duprin 6400 32D is satin stainless steel - so if the opening has to match brass or bronze trim, the 3478 range covers finishes those do not.
25) I need a strike that can be energized continuously. What are the options besides the standard Trine 3478?
On the Trine 3478, the standard versions are intermittent duty and the LC versions are rated for both intermittent and continuous duty. If the specification instead calls for a heavy duty listed peer, the Alarm Controls AES-100 is a Grade 1 heavy duty strike and the Locknetics MDS100 US32D and MS100 US32D are heavy duty units; the Von Duprin 6210 is a heavy duty Grade 1 mortise strike at 24 VDC fail-secure.
26) Is the Trine 3478 non-handed, and are the alternatives handed?
The Trine 3478 is non-handed, so one part covers left and right hand openings across the 605, 606, 613, 629 and 630 finishes. Among the comparables, the universal-style strikes are the ones described the same way for coverage breadth: the Camden CX-ED1410 and CX-ED1420 are universal Grade 1 ANSI fire-rated strikes, the CX-ED1689L-4 is a universal low profile fire-rated unit with four faceplates, and the Von Duprin 6400 32D is modular for mortise or cylindrical locks.
27) What finishes does the Trine 3478 electric strike come in, and can I match the lock trim already on my doors?
Five finishes: 605 bright brass, 606 satin brass, 613 oil rubbed bronze, 629 bright stainless steel, and 630 satin stainless steel. All five are available in both 12 and 24 VDC and in fail-safe or fail-secure, so 630 matches the 32D/satin chrome-look trim on most commercial openings, and 613 blends with dark bronze entries.
28) Does the Trine 3478 buzz when it releases?
Silent operation is one of the design points of the 3478, which uses a micro solenoid assembly rather than an AC buzzer coil. That matters in a library, clinic, hotel corridor, or executive suite where a buzzing strike gets complained about.
How fast can I get the Trine 3478-24DC-32D delivered?
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Can I return it if it doesn’t work for me?
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Does the Trine 3478-24DC-32D come with a warranty?
Absolutely. The Trine 3478-24DC-32D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Trine 3478-24DC-32D?
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