Bosch PSU-KP DSPK Universal Voltage Power Supply

Overview

The Bosch PSU-KP DSPK is a universal voltage power supply designed to feed 24VDC control logic to Bosch AND and DSPK security panels and relay modules. It accepts standard North American line voltage (120/277VAC, 50/60Hz), detects the input automatically, and outputs regulated 24VDC at 150mA — enough for low-power panel logic, solenoid relays, and monitoring circuits without a separate power conditioner. The 20A load-switching capability handles incandescent, ballast, and motor loads up to 1HP at either voltage. Zero Arc Point Switching eliminates nuisance relay chatter during switching transitions.

Compatibility

This unit pairs with Bosch AND and DSPK security panels as the primary 24VDC regulated supply. It also works with the MPSA companion auxiliary relay device for expanded switching scenarios. Check your panel's datasheet to confirm the PSU-KP DSPK is your required model — Bosch panel families have multiple power supply options depending on load and voltage.

Installation Notes

Mounting flexibility is built in: install inside a junction box, inside a fixture, or outside a junction box via a 1/2-inch EMT threaded nipple. Physical dimensions are 3.69 inches H × 2.33 inches W × 1.36 inches D; weight is 15 ounces. Operating temperature range is 32°F to 104°F (0°C to 40°C); humidity tolerance is 0% to 95% non-condensing. The unit is plenum rated and approved for indoor use only. All wiring and load calculations must comply with local electrical code and your panel's installation guide.

Certifications and compliance: UL and cUL listed. Meets Buy American Act (FAR 52.225-9) and Trade Agreements Act (FAR 52.225-11) federal procurement requirements. Includes 5-year manufacturer warranty.