The Space Age SSU-MR-311/T is a precision low-voltage control relay designed for critical fire alarm and building automation systems, engineered to provide reliable switching performance in commercial and institutional environments. This single pole, double throw (SPDT) relay offers specialized functionality for interconnecting fire detection devices, control panels, and auxiliary system components with exceptional electrical sensitivity.
Ideal for integration with addressable fire alarm panels, building management systems, and emergency control circuits, the SSU-MR-311/T delivers robust signal translation between low-voltage control circuits. Fire alarm professionals will appreciate its compact design and precise trip characteristics, which enable reliable signal transmission across complex networked safety infrastructure.
Key Features
- Low voltage control configuration with 2.5-27.3mA trip sensitivity
- Single pole, double throw (SPDT) switching configuration
- Operating voltage range of 5-27.3VDC for versatile system integration
- Compact form factor suitable for tight electrical enclosures and control panels
- Designed for consistent performance in fire alarm and life safety applications
- Compatible with UL-listed fire alarm control systems and peripherals
Specifications
- Voltage Range: 5-27.3VDC
- Current Sensitivity: 2.5-27.3mA
- Contact Configuration: SPDT (Single Pole, Double Throw)
- Manufacturer: Space Age
- Compliance: Meets NFPA 72 fire alarm system requirements
Typical installation environments include commercial office complexes, educational facilities, healthcare institutions, and industrial control rooms where precise low-voltage signal switching is critical for emergency notification and building safety systems. The SSU-MR-311/T supports seamless integration with fire alarm control panels, HVAC shutdown circuits, elevator recall mechanisms, and other life safety infrastructure.
Engineered for reliability in mission-critical applications, this relay provides fire alarm technicians and facilities managers a dependable solution for complex signal routing and system interconnection challenges. Its robust design ensures consistent performance under varying environmental conditions.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 5 × 2 × 2 in |
| Condition | New |
| Manufacturers | Securitron |
| Part Type | Replacement Part |






