Honeywell RA890F1270 Flame Safeguard Control 120VAC Burner Protectorelay Safety Unit

Honeywell · Circuit Breakers & Protection

Description  The Honeywell RA890F1270 is a flame safeguard primary control unit designed to monitor and manage burner operations using electronic rectification flame detection. Operating at 120 VAC, it provides reliable safety timing, rapid flame response, and built-in protection features for industrial and commercial combustion systems.     Technical Specifications  Condition New/Never Used Surplus Brand Honeywell Category Flame Safety Controls Part Number RA890F1270 Subcategory Primary Burner Controls / Protectorelays Voltage 120 VAC Safety Timing 15 seconds Flame Response Time 0.8 seconds Alarm Output Yes (SPDT relay contacts) Mount Compatibility Q270A1024 Sub-base Replacement Compatibility Replaces RA890E Startup Protection Safe-start check, ignition crossover protection Ambient Temperature -20°F to 115°F (-29°C to 46°C) Weight 3 lbs.       Information About RA890F1270 The RA890F1270 is a solid-state Protectorelay control designed to provide safe startup, flame monitoring, and lockout protection for burners. It is a direct replacement for the RA890E and is fully compatible with the Q270A1024 sub-base, allowing easy retrofitting without rewiring. This control performs a safe-start check to ensure there is no flame present before start-up and includes recycling logic in the event a flame signal is lost during the run cycle. If the system fails to establish a flame during pilot ignition, the RA890F1270 initiates a lockout to protect the burner. Built-in SPDT alarm contacts and fast flame response time enhance its effectiveness in critical safety applications. The thermoplastic base and captive mounting screws simplify installation and ensure long-lasting durability. Key Features: Electronic Rectification Flame Detection: Provides precise monitoring and reliable control using flame rod systems. Safe-Start Check: Prevents startup in the presence of a false flame signal to ensure operational safety. Ignition Crossover Protection: Guards against cross-conduction errors in flame rod installations. Replaces RA890E: Backward compatible with RA890E and fits Q270A1024 sub-base for direct replacement. Built-In Alarm Contacts: SPDT alarm relay provides output for remote status or fault signaling. Solid-State Circuitry: Delivers consistent and durable flame monitoring without mechanical wear. Fast Flame Response: Reacts within 0.8 seconds for real-time fault detection. Rugged Thermoplastic Base: Resilient housing designed to endure mechanical and thermal stress. The RA890F1270 enhances combustion system safety with fast flame detection, auto-recycle functionality, and proven compatibility with Honeywell mounting bases.

Brand: Honeywell · Category: Circuit Breakers & Protection

Key features

• Electronic Rectification Flame Detection: Provides precise monitoring and reliable control using flame rod systems.
• Safe-Start Check: Prevents startup in the presence of a false flame signal to ensure operational safety.
• Ignition Crossover Protection: Guards against cross-conduction errors in flame rod installations.
• Replaces RA890E: Backward compatible with RA890E and fits Q270A1024 sub-base for direct replacement.
• Built-In Alarm Contacts: SPDT alarm relay provides output for remote status or fault signaling.
• Solid-State Circuitry: Delivers consistent and durable flame monitoring without mechanical wear.
• Fast Flame Response: Reacts within 0.8 seconds for real-time fault detection.
• Rugged Thermoplastic Base: Resilient housing designed to endure mechanical and thermal stress.

Specifications

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