Argo Industries Z140 1-Zone Ice Cube Relay, 120 VAC, 7.2 amp, DPDT

• 120 volt/60 Hz/40 VA transformer
• 5 years warranty
• Auto-reset electronic fuse protection

Sid Harvey Item #:R512-10: Replaces Part #:'s : 5C905,
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Argo Industries Z209 2-Zone Ice Cube Relay with Priority, 7.2 amp Full Load, DPDT

• 120 volt/60 Hz/75 VA transformer
• 5 years warranty
• Auto-reset electronic fuse protection

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Taco SR502-4
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Taco SR502-4

Arzel PAN-AB002 2-Zone Zone Control Panel

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Argo Industries Z210 3-Zone Ice Cube Relay with Priority, 7.2 amp Full Load, DPDT

• 120 volt/60 Hz/75 VA transformer
• 5 years warranty
• Auto-reset electronic fuse protection

Sid Harvey Item #:R512-4: Replaces Part #:'s : 5C910,
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Argo Industries R512-4

Taco SR503-4 switching relay is the best choice for all your zoning needs, with advanced powerport cards, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the 00 family of circulators and thermostats, total system integrating is achieved. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups.

• External indicator lights
• Switchable priority
• Priority protection
• Simplified wiring
• Sealed relays
• Fuse protected outputs
• Compact design
• 100% factory tested
• Isolated end switch
• Contractor friendly PC board layout
• Universal thermostat compatibility
• All circulator relay connections, including ZC/ZR, are rated 1/3 HP (6 amp full load, 36 amp locked rotor) at 120 VAC
• End switch connections are rated 24 VAC, 1 amp
• All thermostat connections supply a 24 VAC class 2 output

Sid Harvey Item #:SR503: Replaces Part #:'s : ERSR301,
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Taco SR503

Taco switching relays combine clearly labeled PC board layouts with advanced features that allow for total system customization. Whether using basic priority switching or the advanced features of the -ExP controls, the job is made easy. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups.

• Front external indicator lights
• Ideal for retrofitting
• Primary circulator output
• Simplified wiring
• Sealed relays
• Fuse protected
• Compact design
• 100% factory tested
• Two isolated end switches
• Contractor friendly PC board layout
• Universal thermostat compatibility
• All circulator relay connections, including ZC/ZR, are rated 1/3 HP (6 amp full load, 36 amp locked rotor) at 120 VAC
• End switch connections are rated 24 VAC, 1 amp
• All thermostat connections supply a 24 VAC class 2 output
• Plug-in power controls

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Taco SR503-EXP-4