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Hydronic Switching Relays
Caleffi Z-one ZSR101 Single Zone Pump Relay, 24 VAC
Part #
135120
MFG #
ZSR101
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Caleffi Z-one ZSR101 Single Zone Pump Relay, 24 VAC
Part #
135120
MFG #
ZSR101
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Caleffi Z-one ZSR101 Single Zone Pump Relay, 24 VAC
Part #
135120
MFG #
ZSR101
Item Features
Attributes
Documents
Item Features
Installer friendly - Ample room for terminations, large screw terminals, automatic resettable fuse, snap-in transformers.
Application versatility - 3 selectable 120 VAC auxiliary switches for enabling pumps and boilers, dedicated pump outputs, unlimited zone expansion.
Extremely reliable design - Clutch-protected drive train, durable synchronous motor, millions installed in North America.
Compact design with snap-on actuator with a convenient in-line push button, removable bottom cap allows for easy in-pipe service.
Application versatility - Hot water, chilled water and low-pressure steam.
Compatible with 2, 3 and 4-wire thermostats or other low voltage controllers with switching action.
Heavy duty, sealed, DPDT, fuse protected relay (with spare fuse).
Two outputs (relay 1 and relay 2) for operating 120 VAC pump with boiler enable, or two devices without boiler enable.
Convenient R, W, C and T, T, COM dual labeling at thermostat terminals.
Rear knock-outs for mounting onto 4 x 4 in junction box.
High capacity 6 VA transformer.
Automatic resettable fuse on 24 V circuit.
Simplified wiring with pre-installed jumper.
Large screw terminals, on-board ground terminals.
Front panel LED indicator light for functional status.
Attributes
Type
Single Zone
Series
ZSR
Voltage Rating
24 VAC
Power Rating
120 VAC
Frequency Rating
50/60 Hz
Dimensions
4-5/8 in L x 2-5/8 in W x 5-3/8 in H
Documents
Catalog
Instruction/Installation Manual
Specification Sheet