Schlage PS904 Base Power Supply 4A, 12/24VDC, Field Selectable, 14x12x4in Enclosure

Schlage Electronic Security PS904 Base Power Supply delivers reliable performance with a robust design, ideal for modern access control applications. Featuring a field-selectable output of 4A at either 12V or 24V DC, this power supply ensures consistent power delivery to your electrified devices, including strikes, locks, and card readers. Designed for easy installation, the PS904 incorporates a flat mounting design and polarized locking connectors for option boards, eliminating the need for racks and simplifying access to terminal blocks. Its universal input accommodates both 120VAC and 240VAC, ensuring versatility in various environments. The NEMA grade enclosure, measuring 14" H x 12" W x 4" D, is built to withstand operational demands while providing eight knockouts for flexible wiring. Safety and monitoring are paramount with features such as LED indicators for AC input and DC output, as well as isolated SPDT contacts to monitor AC power status. The unit complies with UL 294, ULC-S318, RoHS, and FCC Part 15 certifications, ensuring high standards of security and environmental compliance. With an operating temperature range of 32° to 120°F and overload protection, the Schlage PS904 Base Power Supply is an excellent choice for professionals seeking a dependable power solution for their access control systems.

Base Power Supply 4 Amp, 12/24VDC Field Selectable, 14in H x 12in W x 4in D Enclosure

The comprehensive line of power supplies and option boards was designed to address the changing needs of the access control market. Installation is simplified by utilizing a flat mounting design and polarized locking connectors for option boards. This design eliminates the need for racks and side connectors. The flat mounting of the option boards also provides for easier access to the terminal blocks for connection of electrified devices (such as electrified strikes, electromagnetic locks, card readers, etc.). Common to the line of PS900 Series power supplies is a constant output rating at both 12v and 24v settings, universal 120 VAC to 240 VAC input, and polarized option board connectors. New fire alarm interface board mounting allows outputs to be configured as switched (power cut) or unswitched (power continues) when signal is provided.

Features:

• 4A @ 12/24 VDC constant output, field selectable with jumper
• Provides low-voltage, class 2, filtered and regulated power
• Universal 120-240 VAC, fused primary input
• Two polarized option board connectors eliminate need for racks and side connectors
• AC input and DC output monitoring circuit with LED indicators
• Externally visible AC input indicator with isolated SPDT contacts
• High-voltage protective cover for AC circuitry
• Battery back-up board auto-selects voltage
• Optional fire alarm plug-in board available
• UL 294, ULC-S318, RoHS, and FCC Part 15 certified

Specifications:

• Input voltage: 120/240 VAC, 50/60 Hz, universal input
• Output voltage: 4A @ 12 or 24 VDC Field selectable with jumper switching supply, 5% regulation, 240mVpp max ripple
• Enclosure: Grey/baked enamel 14" x 12" x 4" (H x W x D) eight 1 ⁄2" x 3⁄4" knockouts NEMA grade 1 hinged cover with lock down screws
• Operating temperature: 32° - 120°F (0° - 49°C)
• AC primary fuse size: 4A, 250v, 5 x 20mm SLOW-BLOW
• Battery fuse size: 7.5A 32v ATO blade style
• DC output protection: Overload protection - current limited foldback circuit
• LED indicators:
• AC input (visible on outside of enclosure)
• DC output
• Isolated SPDT contacts to monitor AC power status
• Weight (power supply): Approx. 9.0 lbs
• Weight (each battery): 4.0 lbs
• AC input termination: 3 position terminal block with protective cover. Wire capacity: 10 AWG max.
• DC output termination: 2 position terminal block. Wire capacity: 12 AWG max.
• Option board connectors: 2
• Fire alarm board connector: Yes (requires connection on option board)
• Keylock: Optional

Option Boards:

• 900-BB: Battery backup option board (installs on main board)
• 900-BBK: Battery backup kit (includes option board and two 7A/hour batteries)
• 900-FA: Emergency interface/fire alarm plug-in (integrates with fire alarm and is used to cut power in case of emergency). Must be installed on option boards
• 900-2RS: 2 relay option board capable of individual or sequential operation for single and pair door applications
• 900-4R: 4 relay board; independently controlled, no timing or logic
• 900-4RL: 4 relay board with integrated logic; field programmable; individual or sequential operation for controlling security interlocks, auto operators, and time delay function
• 900-8F: 8 individually fuse protected outputs, giving the flexibility to power multiple devices and provides another layer of protection
• 900-8P: 8 PTC protected outputs with auto resettable fuses; 1.8A output (class 2)
• 900-KL: Key lock cover

Resources

• Cut Sheet