SDC Spacesaver 2490 Series Nar...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$613.00
$434.97
SDC SDC 2490 Series - Spacesaver Narrow Right Angle Electric Mortise Bolt Lock, Failsecure SDC-2490

SDC Spacesaver 2490 Series Narrow Stile Right Angle Electric Mortise Bolt Lock with Fail-Secure Operation

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Model: 2490AHV
$613.00
$434.97
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$613.00
$434.97
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SDC Spacesaver 2490 Series Narrow Stile Right Angle Electric Mortise Bolt Lock with Fail-Secure Operation

Patented Concealed Mortise Locking Technology for Access Control Applications

The SDC Spacesaver 2490 Series represents a fundamental innovation in electric locking technology, featuring patented right angle bolt projection that allows installation in virtually any standard frame or narrow 1-1/2"; door lock stiles through simple mortise cutout. This fail-secure electric mortise bolt lock operates on 12/24VDC with field selectable dual voltage capability and includes specification grade solenoids for superior performance and longevity. The concealed design provides complete aesthetic acceptability while delivering enhanced security for commercial access control applications.

Professional Features & Benefits

  • Narrow Stile Compatibility: Designed specifically for narrow 1-1/2"; frame or door stile installations where space is limited.
  • Patented Right Angle Design: Spacesaver bolts project at right angles to the lock mechanism, enabling installation in virtually any standard frame through simple mortise cutout.
  • Specification Grade Components: Equipped with specification grade solenoids that deliver superior overall performance in both force and longevity compared to commercial grade alternatives.
  • Automatic Relock System: Field adjustable and bidirectional automatic relock ball switches keep the bolt retracted while door is open and automatically project the bolt upon door closure.
  • Tamper-Resistant Construction: Stainless steel bolts rotate freely, making attempts to tamper or cut extremely difficult while providing long-term durability.
  • Fail-Secure Operation: Field selectable dual voltage 12/24VDC operation with voltage and current spike protection for reliable security performance.
  • Fire Safety Certifications: UL 10C Positive Pressure Fire Tests certified and ULC-S104 Standard Method for Fire Tests compliance for code-required applications.
  • Complete Concealment: Entire lock mechanism remains hidden for superior aesthetic acceptability and enhanced security in both new and retrofit installations.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Door Strike: 4"; x 11/2"; x 1/8";
  • Electronic: Yes
  • Face Plate: 8"; x 1-1/4"; x 1/8";
  • Fail-Safe/Fail-Secure: Fail-Secure
  • Lock Type: Mortise
  • Product Category: Mechanical Locks
  • Product Group: Mechanical Locks
  • Product Model: 2490
  • Product Subgroup: Mortise Locks and Trim
  • Product Type: Narrow Stile Locks
  • Product Voltage: 12/24VDC
  • Series: 2490 Series
  • Stile Type: Narrow Stile
  • Subcategory: Mortise Bolt Lock

Professional Applications

  • Commercial Building Security Systems
  • Educational Institution Access Control
  • Healthcare Facility Secure Areas
  • Government and Municipal Buildings
  • Industrial Facility Monitoring
  • Multi-Tenant Residential Properties
  • Retail Loss Prevention Systems

Why Choose SDC Quality?

SDC Spacesaver electric mortise bolt locks deliver professional-grade reliability with specification grade solenoids and stainless steel construction designed for demanding commercial applications. UL 10C and ULC-S104 fire safety certifications ensure code compliance while the patented concealed design provides superior security and aesthetic acceptability. Engineered for demanding access control applications where dependable performance and tamper resistance are essential.

Manufacturer Resources

SDC Full Catalog

Product Specs

Series:
2490 Series
Subcategory:
Mortise Bolt Lock
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Bolts
Commercial/Residential:
Commercial
Electronic:
Yes
Lock Type:
Mortise
Stile Type:
Narrow Stile
Fail-safe / Fail-secure:
Fail-Secure
Product Model:
2490
Product Voltage:
12/24VDC
Face Plate:
8" x 1-1/4" x 1/8"
Door Strike:
4" x 11/2" x 1/8"
Product Category:
Mechanical Locks
Department:
Door Hardware

SDC 2490AHV – Frequently Asked Questions

1) What happens to an SDC 2490 mortise bolt when the power fails?
It stays locked. The 2490 is fail-secure, so the bolt remains projected on a power loss and the opening holds its security. That makes it wrong for an egress door that must free up on a fire alarm or power drop unless the opening is released some other way, and right for stock rooms, IT closets, and other secured areas where you want the door locked when the building goes dark.
2) Does the SDC 2490 run on 12 volt or 24 volt DC?
Either. Voltage is field selectable dual 12/24VDC, so one part number covers both bus voltages and you set it at install instead of ordering a voltage-specific lock. It also carries voltage and current spike protection on the input.
3) Can the SDC 2490 be used on a fire rated door?
The 2490 is certified to UL 10C Positive Pressure Fire Tests and complies with ULC-S104 Standard Method for Fire Tests. Note the lock is fail-secure, so on a fire door in an egress path the release scheme has to come from the alarm interface or exit device side, not from the bolt dropping on power loss.
4) What is the difference between bolt position status and door position switch when ordering an SDC 2490?
Two different monitoring outputs, and you order each independently as Yes or No. Bolt Position Status reports whether the bolt itself is actually projected, which is what a guard station or access panel needs to prove the opening is truly secured. Door Position Switch reports whether the door leaf is closed. Take BPS if your head end needs to distinguish a locked door from a closed-but-unlocked one; take both if you want forced-door and held-open alarms as well. Neither can be added later without pulling the lock, so specify at order.
5) Should I use an electric mortise bolt or an electric strike on a narrow stile storefront door?
An electric strike needs a latch to hold and a frame with room for the strike body, which narrow aluminum frames often don't have. The 2490 mortise bolt instead throws a bolt from the door stile into a 4 x 1-1/2 x 1/8 inch strike, and installs by mortise cutout in a stile as narrow as 1-1/2 inches. Choose the bolt when the door has no lockset to release or when the frame won't take a strike, and choose a strike when you need to release an existing latch and keep mechanical key override.
6) Will the bolt fire into the door edge if someone leaves the door open?
No. The 2490 uses field adjustable, bidirectional automatic relock ball switches: they hold the bolt retracted while the door is standing open and project it only once the door closes. Bidirectional matters on doors that swing either way or where the ball rides a jamb on one side, and adjustability lets you tune it to the actual gap so the bolt isn't firing early against the frame.
7) Is the SDC 2490 bolt easy to cut through or pry?
The bolt is stainless steel and rotates freely in its housing, so a saw blade spins it rather than biting, which makes cutting the bolt very difficult. The whole mechanism is concealed inside the stile once mortised, so there is no exposed body to attack and nothing added to the face of the door.
8) Can the SDC 2490 be retrofitted into an existing door, or is it new construction only?
Both. The right angle bolt lets it go into virtually any standard frame or narrow stile through a simple mortise cutout, so it drops into existing doors as well as new ones. Because the lock is fully concealed after install, a retrofit leaves no surface-mounted hardware on the door, which is why it gets used in offices, schools, healthcare suites, and multi-tenant residential where the look of the opening matters.
9) What finishes does the SDC Spacesaver 2490 mortise bolt come in?
Eleven, covering the standard BHMA range: 335 dull black, 605 bright brass, 606 dull brass, 611 bright bronze, 612 dull bronze, 613 oil rubbed bronze, 625 bright chrome, 626 dull chrome, 628 dull aluminum, 629 bright stainless, and 630 satin stainless steel. Since the lock body is concealed in the stile, the finish decision is really about the exposed faceplate and strike matching the rest of the opening, so 628 for clear anodized aluminum storefront and 630 alongside satin stainless hardware are the usual picks.
10) Is the SDC 2490 rated for a high traffic commercial opening or is it a light duty lock?
Commercial duty. The 2490 uses specification grade solenoids rather than commercial grade, which SDC rates for greater force and longer life, and the bolt is stainless steel. It is a 12/24VDC electric lock, so it needs a power supply and an access control or push-button release circuit, not just a key.
How fast can I get the SDC 2490AHV delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the SDC 2490AHV come with a warranty?
Absolutely. The SDC 2490AHV 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 SDC 2490AHV?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the SDC 2490AHV from ZenSupply?
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