Description

The Space Age SSU-MR-101/C is a multi-voltage control relay designed to provide dependable switching and control functions for fire alarm, HVAC, security, lighting, and building automation systems. The Space Age SSU-MR-101/C features a single-pole double-throw (SPDT) relay with a durable enclosed housing and supports multiple control voltages, allowing one relay to serve a wide variety of low-voltage and line-voltage control applications. Therefore, it offers flexibility and reliability for both new installations and retrofit projects.

Space Age SSU-MR-101/C Function

The SSU-MR-101/C is designed to provide relay control between initiating devices, control panels, and connected equipment. As a result, it allows building systems to activate, deactivate, or transfer electrical circuits based on alarm, supervisory, or control conditions. In addition, the relay supports continuous-duty operation for long-term reliability in critical life safety and automation applications.

Multi-Voltage Input Capability

The Space Age SSU-MR-101/C can be energized from several different control voltages, including:

• 24 VDC
• 24 VAC
• 120 VAC
• 230 VAC

Consequently, a single relay model can be used across a wide range of system designs, reducing inventory requirements and simplifying installation planning. Furthermore, installers can select the appropriate input terminals for the required operating voltage.

SPDT 10-Amp Relay Contacts

The SSU-MR-101/C incorporates SPDT (Single Pole Double Throw) contacts rated for up to 10 amps resistive load. Therefore, it can be used to control HVAC equipment, notification appliances, lighting circuits, fans, dampers, and other electrical loads. Additionally, the SPDT configuration provides flexibility for normally open and normally closed switching applications.

LED Status Indication

Each relay includes a built-in red LED that illuminates whenever the relay coil is energized. As a result, technicians can quickly verify relay operation without additional test equipment. Moreover, visual indication simplifies troubleshooting, commissioning, and routine maintenance activities.

Polarized DC Input Design

The SSU-MR-101/C features polarized DC inputs for proper operation on direct current control circuits. Consequently, the relay provides dependable performance when installed in fire alarm and security system applications utilizing DC control voltage. Additionally, proper polarity protection helps reduce installation errors.

Protective Enclosed Housing

The “/C” designation indicates the relay is supplied in a protective enclosure. Therefore, internal relay components are shielded from dust and accidental contact during installation and operation. Furthermore, the enclosure simplifies mounting within control cabinets and electrical equipment spaces.

Typical Applications

The Space Age SSU-MR-101/C is commonly used for:

• Fire alarm control interfaces
• HVAC equipment control
• Fan shutdown systems
• Smoke control systems
• Security system integration
• Lighting control
• Energy management systems
• Building automation systems
• General-purpose electrical switching
• Status monitoring circuits

Consequently, it serves as a versatile relay solution across multiple building systems.

Technical Specifications

• Model: SSU-MR-101/C
• Manufacturer: Space Age Electronics
• Series: MR-100 Series
• Type: Multi-Voltage Control Relay
• Contact Configuration: SPDT
• Contact Rating: 10 Amps Resistive
• Input Voltage Options:
  • 24 VDC (18–35 VDC)
  • 24 VAC (18–35 VAC)
  • 120 VAC
  • 230 VAC
• LED Indicator: Red Energized Status LED
• Input Type: Polarized DC Input
• Duty Cycle: Continuous Duty
• Enclosure Type: Dust-Resistant Enclosure
• Mounting: Enclosed Cabinet Mount
• Application: Control and Interface Relay
• Suitable Systems: Fire Alarm, HVAC, Security, Energy Management, Lighting Control
• Listings: UL Listed, CSFM Listed, UUKL Smoke Control Listed

Applications

The Space Age SSU-MR-101/C is ideal for:

• Fire alarm systems
• Smoke control systems
• HVAC control applications
• Security systems
• Access control systems
• Building automation systems
• Energy management systems
• Lighting control systems
• Industrial control systems
• Commercial building installations

Reliable Multi-Voltage Relay Solution

The Space Age SSU-MR-101/C combines multi-voltage input capability, 10-amp SPDT contacts, LED status indication, continuous-duty operation, and enclosed construction in a dependable control relay package. Overall, it provides a flexible and reliable interface solution for fire alarm, HVAC, security, and building automation systems while simplifying installation and long-term maintenance.

SSU-MR-101 C Datasheet