SDC 620 Series 1 Amp Regulated...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$311.00
$223.46
SDC SDC 620 Series - 1 Amp Regulated & Filtered Low Voltage Power Supply SDC-620

SDC 620 Series 1 Amp Regulated & Filtered Low Voltage Power Supply with Dual Voltage Selection

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Model: 602RFL
$311.00
$223.46

In Stock (leaves warehouse same day if ordered before 3pm ET)

$311.00
$223.46
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SDC 620 Series 1 Amp Regulated & Filtered Low Voltage Power Supply with Dual Voltage Selection

Professional Access Control Power Solution

The SDC 620 Series power supply delivers regulated and filtered 12/24 VDC power specifically engineered for electric locks and access control systems. This 1 amp unit features field selectable dual voltage capability with Class 2 output, combining switching power supply efficiency with linear power supply inductive load handling. The hybrid design includes surge protection, battery charging circuit, and fire/emergency release input to ensure reliable operation of connected access control devices.

Professional Features & Benefits

  • Dual Voltage Operation: Field selectable 12/24 VDC output provides flexibility for various access control system requirements.
  • 1 Amp Current Capacity: Sufficient power output for electric locks and multi-door access control applications with reliable performance.
  • Regulated and Filtered Power: Linear DC power output with filtering and voltage regulation protects system components and ensures longevity.
  • Hybrid Design Technology: Combines switching power supply efficiency with linear power supply inductive load handling capability for optimal performance.
  • Comprehensive Protection: Input and output surge protection with low battery disconnect safeguards connected devices from power-related damage.
  • Fire Safety Integration: Fire/emergency release input allows integration with life safety systems for code compliance.
  • Battery Backup Ready: Isolated battery charging circuit supports backup power systems for continuous operation during power outages.
  • Multiple Model Options: Available as 602RF with cabinet, 602RFA with large cabinet, or 602RFL without cabinet for flexible installation requirements.

Technical Specifications

  • Commercial/Residential: Commercial
  • Current: 1A
  • Department: Door Hardware
  • Electronic: Yes
  • PDF:SDC Full Catalog: https://zensupply.com/content/pdf/lcn/CondensedHardwareBrochure
  • Product Category: Electronic Access Controls
  • Product Group: Electronic Access Controls
  • Product Model: 602RF, 602RFA, 602RFL
  • Product Subgroup: Controllers, Power Supplies and Transformers
  • Product Type: Power Supplies
  • Product Voltage: 120V
  • Series: 620 Series
  • Subcategory: Power Supply

Professional Applications

  • Commercial Building Security Systems
  • Multi-Door Access Control Installations
  • Healthcare Facility Access Control
  • Educational Institution Safety Systems
  • Industrial Facility Monitoring
  • Government and Municipal Buildings
  • Electric Lock Power Distribution

Why Choose SDC Quality?

SDC power supplies are specifically developed to reduce power system issues that cause 75-85% of access control operating problems and technical support calls. The heavy-duty circuitry is ideal for inductive loads with UL 294 Access Control System Units and UL 603 Power Supplies certifications. Engineered for demanding commercial applications where clean, filtered DC power and surge protection are essential for system reliability.

Manufacturer Resources

SDC Full Catalog

Product Specs

Subcategory:
Power Supply
Series:
620 Series
Product Group:
Electronic Access Controls
Product Subgroup:
Controllers, Power Supplies and Transformers
Commercial/Residential:
Commercial
Product Type:
Power Supplies
Electronic:
Yes
Current:
1A
Product Model:
602RF, 602RFA, 602RFL
Product Voltage:
120V
Product Category:
Electronic Access Controls
Department:
Door Hardware

SDC 602RFL – Frequently Asked Questions

1) What is the difference between the SDC 602RF, 602RFA and 602RFL?
They are the same 1 amp regulated and filtered supply in three packages. The 602RF comes with a standard cabinet, the 602RFA with a large cabinet (the one to pick when you are adding door control modules or batteries and need the room), and the 602RFL ships less cabinet, as a board only, for dropping into an existing enclosure or a manufacturer's housing you already have on the wall.
2) Is 1 amp enough to power my electric locks, or do I need a bigger supply?
Budget by inrush and holding current, not door count. At 1 amp the 620 Series suits a single opening or a small group of low-draw devices such as electric strikes and small mags. Motorized latch retraction exit devices and multi-mag runs will exceed it. If you need more headroom in the same 12/24 VDC field-selectable style, the Von Duprin PS902 base supply is 2 amps, the RCI DKPS-2A gives 2 amps across 8 outputs, and the BEST PS161-6 is a 6 amp 120V input unit built for delayed egress exit devices.
3) Will an SDC 620 power supply drop the mags on a fire alarm signal?
Yes, there is a fire/emergency release input on the board so the alarm system can cut power to the locks it feeds. You can also order it with a manual reset switch, which forces someone to physically reset the supply after a release event instead of it restoring on its own when the alarm clears. Specify that switch at order time if your AHJ or your egress sequence wants a deliberate reset.
4) Can I add relay and controller boards inside the SDC 620 cabinet, or do I need a separate panel?
Modules mount in the supply. The 620 Series takes SDC door control modules including the XUR-1 two relay, XUR2-4 four relay and XUR4-8 eight relay microprocessor controllers, the XFB4 multiple fused output relay, the XCR4 four station control relay, the XACM-1 six station input control relay, the XEMC exit device sequencer, and the X12VR 12VDC voltage control regulator. That last one is how you take a 12 volt device off a supply you have set to 24. Order the 602RFA large cabinet when you are stacking modules and want the space.
5) Is the SDC 620 power supply UL listed for access control?
It carries UL 294 Access Control System Units and UL 603 Power Supplies certifications, which is the pair a specifier or an inspector normally wants to see on lock power in a commercial building. It is a commercial-rated unit, not a residential one.
6) What is the closest 1 amp 12/24 VDC equivalent to the SDC 602RF power supply?
The Adams Rite PS-1 is the nearest match on output: it is a regulated power supply rated 1 amp at 12/24 volts DC with battery backup, the same current rating and dual-voltage arrangement the SDC 620 Series carries at 1A with field selectable 12/24 VDC. The Securitron AQD1 is also a 12/24 VDC 1 amp unit, but it is a switching supply, where the SDC 620 uses a hybrid design that pairs switching efficiency with linear inductive load handling for electric locks. If the load is an inductive electric lock or strike, that difference is the one to weigh.
7) The 1 amp SDC 602RF is not enough current for my door count. What has more output?
Step up within the same 12/24 VDC field-selectable family. The Von Duprin PS902 base power supply is 2A at 12/24 VDC field selectable, and the RCI DKPS-2A gives 12/24VDC at 2A across 8 outputs, which suits distributing power to several openings from one cabinet. Above that, the BEST PS161-6 takes 120V input to 12/24V output at 6A capacity for delayed egress exit devices, and the Altronix AL1024ULACMCB delivers 24VDC at 10A over 8 PTC outputs from a 115VAC 60Hz input. The SDC 620 Series is a 1A unit at 120V input, so multi-door jobs that exceed that budget belong on one of the larger frames.
8) I need battery backup on the opening. Which power supplies besides the SDC 602RF cover that?
The SDC 620 Series includes an isolated battery charging circuit with low battery disconnect, so it is backup ready at 1A. Among the alternatives, the Adams Rite PS-1 is a 1 amp 12/24 volt DC regulated supply with battery backup, the Command Access PS204/204B is a linear supply at 2A 24VDC with battery backup, and the Detex 10-800 Series pairs a 120VAC/24VDC supply and battery backup with a universal logic controller. Pick on output and voltage: the SDC and Adams Rite units sit at 1A, the Command Access unit doubles the current but is 24VDC only.
9) Will an SDC 602RF run a motorized latch retraction exit device?
Motor latch retraction is an inrush load and is normally powered from a supply built for it. The BEST RPSMLR2 Series is a power supply specifically for motorized latch retraction exit devices, and the BEST PS161-6 is built for delayed egress exit devices at 6A capacity. The SDC 620 Series is a 1A regulated and filtered unit for electric locks and access control devices; its hybrid design handles inductive loads, but the 1A budget is the number to check against the device manufacturer's inrush requirement before substituting.
10) What looks like a substitute for an SDC 602RF power supply but is not one?
Two items in the same aisle are not replacements for it. The ROFU 10305-LA/10306-LA is a tamper resistant power transfer hinge rated 1.5A at 42V; it moves power from frame to door and generates none, so it works alongside a supply rather than in place of one. The Command Access CAT Field Tester is a portable 12-24VDC unit that runs off DeWalt, Makita and Milwaukee batteries, intended for bench and field testing rather than permanent power at an opening. Both quote 12 to 24 volt figures, which is why they get confused with the SDC 620 Series 1A regulated supply.
11) There is no AC power at the gate. What replaces the SDC 602RF where there is no line voltage?
The SDC 620 Series needs 120V line input, so it is not the unit for an opening with no service. The Securitron BPSS is a boxed solar power supply, which is the route for a remote gate or outbuilding. For temporary work at an opening with no permanent feed, the Command Access CAT Field Tester is a portable 12-24VDC supply that runs from DeWalt, Makita and Milwaukee batteries, though that is a testing tool rather than a permanent installation.
12) Does the SDC 620 Series support battery backup so locks stay powered in an outage?
There is an isolated battery charging circuit on board, plus low battery disconnect so a backup battery is not run flat and damaged. Batteries themselves are a separate purchase, sized to the load and the hold time you want. If you want a supply with backup already framed into the product, the Adams Rite PS-1 is a 1 amp 12/24 VDC unit with battery backup and the Command Access PS204/204B is a 2A 24VDC linear supply with battery backup.
13) Should I use a linear or a switching power supply for electric locks?
Inductive loads like mags and solenoid strikes are what decide it. Switching supplies are efficient and run cool; linear supplies handle inductive loads better. The SDC 620 Series is a hybrid, combining switching efficiency with linear inductive load handling, which is why it is aimed at lock power rather than general low voltage. If you want a straight switching unit, the Securitron AQD1 is a 12/24 VDC 1 amp switcher. For a pure linear at 24 volts, the Command Access PS1 Series gives 1 amp.
14) I already have an enclosure on the wall. Can I buy just the SDC power supply board?
Order the 602RFL, which ships less cabinet. It is the same 1 amp regulated and filtered 12/24 VDC board as the cabinet models, so you keep the surge protection, battery charging circuit and fire release input while reusing the housing already mounted. Note that the cabinet-mounted options, key lock cover and the on/off switch on the enclosure cover, only apply to the cabinet versions.
15) What can I use instead of the SDC 620 if I need many separately fused outputs for a multi-door system?
The 620 Series is a 1 amp supply, and multi-output distribution comes from adding SDC modules such as the XFB4 fused output relay or the XUR4-8 eight relay controller. If you would rather buy the distribution built in, the RCI DKPS-2A provides 8 outputs at 12/24VDC and 2A, and the Altronix AL1024ULACMCB is a much larger unit with 8 PTC outputs at 24VDC and 10A from a 115VAC 60Hz input.
16) Is a switching power supply an acceptable swap for the SDC 602RF on an electric lock?
It depends on the load. The Securitron AQD1 is a switching supply at 12/24 VDC 1 amp, the Securitron AQL4 is switching at 12/24VDC 4/3 amp, and the Securitron AQS1210 is switching at 12 VDC 10 amp. The SDC 620 Series takes a different route at the same 1A rating: a hybrid design that combines switching efficiency with linear inductive load handling, and it delivers regulated and filtered linear DC output with input and output surge protection. On inductive electric lock loads that distinction is the deciding one; on straight electronics the switching units cover the same voltages.
17) I need relay control and logic at the door, not just power. What are my options against the SDC 602RF?
The SDC 620 Series takes control on board through its door control module choices, including the XUR-1 two relay and XUR2-4 four relay microprocessor controllers, the XCR4 four station control relay and the XEMC exit device sequencer, so one cabinet carries both power and logic. If you would rather buy the logic as its own unit, the Detex 10-800 Series is a universal logic controller with a 120VAC/24VDC supply and battery backup, and the BEST ELR150 Series is a power supply control module for electronic access control. The Altronix AL1024ULACMCB combines supply and access power controller duty with 8 PTC outputs at 24VDC 10A for larger openings counts.
18) Can the SDC 602RF power an intercom or video entry kit?
Check the kit's requirement first. The Aiphone AC-PS1250 is a 12V DC 5A UL listed supply made for Aiphone AC Series access control kits, and a kit that calls for that unit is asking for far more current than the SDC 620 Series 1A output provides. The SDC 620 Series is built around electric locks and access control devices with regulated, filtered 12/24 VDC and a fire/emergency release input. Where an entry system specifies its own manufacturer supply, use that unit and let the SDC handle the lock power.
19) Will this power supply protect my access control boards from voltage spikes?
Surge protection is on both the input and the output side, and the DC output is regulated and filtered rather than raw rectified. That is the difference that matters when a reader or controller downstream is sensitive to noise, and it is aimed squarely at the power-related faults behind most access control service calls.
20) Can I lock the power supply cabinet so nobody kills power to the doors?
A key lock cover is available as an ordering option on the cabinet models, which is worth specifying when the supply lands in a corridor, a tenant space or anywhere outside a secured IT or electrical room. You can also put the power on/off switch inside the enclosure instead of on the cover, so the switch is behind the locked door rather than in front of it.
How fast can I get the SDC 602RFL 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 602RFL come with a warranty?
Absolutely. The SDC 602RFL 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 602RFL?
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 602RFL from ZenSupply?
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