SIEMENS (EL-320) End-Of-Line [Eol] With Diode (Solenoids)

The Siemens EL-320 End-Of-Line (EOL) resistor with integrated diode is a critical component in fire alarm circuit design, specifically engineered for precise circuit termination and electrical protection in commercial and institutional fire detection systems. Designed for seamless integration with Siemens addressable fire alarm panels and notification appliance circuits, this EOL resistor provides essential electrical supervision and fault monitoring capabilities across complex fire alarm infrastructures.

Strategically implemented at circuit endpoints, the EL-320 ensures continuous electrical monitoring by maintaining circuit integrity and enabling immediate fault detection. Its embedded diode provides additional circuit protection, preventing reverse current and maintaining consistent signal transmission in both conventional and intelligent fire alarm configurations. Typical installation environments include high-rise office complexes, educational facilities, healthcare campuses, and industrial manufacturing settings where reliable fire detection is paramount.

Key Features

• Precision-engineered end-of-line resistor with integrated protective diode
• Compatible with Siemens addressable and conventional fire alarm control panels
• Supports circuit supervision and fault monitoring in complex alarm configurations
• Designed for robust performance in commercial and institutional environments
• Meets stringent UL 864 and NFPA 72 compliance standards
• Constructed with high-temperature, flame-retardant materials for enhanced reliability

Technical Specifications

• Resistance: Standard 47kΩ end-of-line configuration
• Voltage Rating: Up to 24VDC nominal circuit voltage
• Operating Temperature Range: -20°F to 150°F (-29°C to 66°C)
• Mounting: Direct circuit installation, panel-mountable
• Diode Type: Fast-recovery rectifier with surge protection

Ideal for fire alarm professionals managing complex notification and detection circuits, the Siemens EL-320 provides critical electrical supervision functionality. Whether integrating with initiating device circuits, notification appliance circuits, or specialized solenoid control systems, this EOL resistor delivers reliable performance across diverse fire alarm network architectures.

For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com