Heating Argo Switching Relays | Arm-4P 4 Zone Expandable Switching Relay

Arm-4P

• Electronic Fuse – Auto Reset
• Robust Transformer – Enough To Handle Up To 15 Zones
• Double-Sided Printed Circuit Board Construction – 100% Factory Tested For Reliability
• Clearly Marked Terminals With Clamping Plates
• Separate Xx (Isolated Switch) & Zc/Zr Relays Protect Boiler Aquastat
• Priority Safety Timer – Ensures Other Zones Get Heat Every 30 Minutes & Prevents Freeze-Ups
• 5-Second Time Delay For Boiler Shut-Off
• Relay Diagnostic Light – Easily Seen Through Window On Cover
• Premium Plug-In Replaceable Relays 24 Vac Transformer Terminals
• Plug-In, Add-On Zone Modules (Ad-1 Or Ad-4)
• Switchable Priority
• High Relay Load Rating – 1/3Hp