SSU-MR-101/T SPACE AGE

Product Overview

The Space Age Electronics SSU-MR-101/T is a track-mounted, multi-voltage SPDT control relay designed for installation inside centralized system control cabinets and custom layout panels. Engineered for local signal routing, HVAC damper controls, elevator recalls, and auxiliary load switching, this modular relay is designed to snap directly into standard 3.25-inch mounting track channels. The card can be energized by mapping field connections to one of four independent control voltage terminals: 24VDC, 24VAC, 120VAC, or 230VAC. Polarity-protected DC inputs safeguard the internal microcircuitry, while a bright, built-in red diagnostic LED illuminates automatically whenever the internal coil is successfully energized, streamlining circuit testing.

Key Features

• Multi-Voltage Coil Input Matrix: Accepts flexible control circuit inputs including 18 to 35VDC, 18 to 35VAC, 120VAC, and 230VAC for versatile field deployment.
• Continuous-Duty Limitations: Specifically engineered for continuous-duty cycles when driven by 24VDC, 24VAC, or 120VAC inputs (not intended for continuous duty at 230VAC).
• Form C Dry Resistive Contacts: Equipped with a single set of SPDT contacts rated for 10A at 120VAC/30VDC, 7A at 230VAC, and 7A at 28VDC.
• 3.25-Inch Snap Track Form Factor: Designed for immediate, tool-less integration into standard 3.25-inch wide plastic snap-track mounting channels inside electrical control boxes.
• Time-Saving Visual Indicator: Features an onboard red LED status tracker that lights up instantly when the coil shifts, speeding up system loop verification tasks.
• Polarized Input Protection: Incorporates polarized DC control terminals to eliminate potential circuit damage resulting from reverse-wiring mistakes in the field.
• Life Safety Approvals: Fabricated under rigid quality parameters, earning full UL listing as a Control Unit Accessory alongside UUKL Smoke Control compliance.