Veris Industries VST121(-4) Install User Manual

Notice, Danger, Track mount 20 amp spdt relay

Z204232-0A

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Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries.

RELAYS

INSTALLATION GUIDE

Track Mount 20 Amp SPDT Relay

Installer’s Specifications

Operating Temperature

0° to 60°C (32° to 140°F)

Operating Humidity

10-90% RH, non-condensing

Relay Status

LED ON=energized

Auxiliary Supply for HOA

24VAC/DC (supplied from a Class 2 or LVLE source)*

Expected Relay Life

Electrical (@ rated current) 100,000 cycles;

Mechanical

(unpowered) 10,000,000 cycles

Terminal Block Torque

0.5 to 3.5 in-lb (0.68 to 4.75 N-m)

Insulation Class

600VAC RMS (coil to contact); 120VAC RMS (terminal to surface)

Agency Approvals

UL508 open device listing; Installation Category III, pollution degree 2

*Class 2 source: A source that provides a Class 2 power supply as defined by the NEC, NFPA70.

LVLE: Low voltage limited energy, not capable of providing more than 30VAC/42.4VDC, 8A or

100VA

VST120(-4), VST121(-4) VST120(-4), VST121(-4)

NOTICE

• This product is not intended for life or safety applications.

• Do not install this product in hazardous or classiﬁed locations.

• The installer is responsible for conformance to all applicable codes.

• Mount this product inside a suitable ﬁre and electrical enclosure.

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• Follow safe electrical work practices.

See NFPA 70E in the USA, or applicable local codes.

• This equipment must only be installed and serviced by qualified electrical personnel.
• Read, understand and follow the instructions before installing this product.
• Turn off all power supplying equipment before working on or inside the equipment.
• Use a properly rated voltage sensing device to confirm power is off.
DO NOT DEPEND ON THIS PRODUCT FOR VOLTAGE INDICATION

Failure to follow these instructions will result in death or serious injury.

DANGER

SNAP

VSTxx: 2.75” (70 mm)
VSTxx-4: 4” (102 mm)

INSTALLATION

Disconnect and lock out all power sources before beginning the

installation.

1. Snap the VST into a mounted

track of the appropriate size.

2. Connect the coil wires as shown. Use either 24 VAC/DC for the Auto Low Voltage

input or 120 VAC for the Auto High Voltage input. Do not use both the Auto Low
Voltage and Auto High Voltage inputs at the same time.

COMMON Input

COIL 24AC/DC Input

COIL120VAC Input

COMMON Contact
NO Contact
NC Contact

3. Connect the contact terminals to the load(s), as required.

4. If using a VST121 or VST121-4, set the HOA switch to the correct position for your

application, Hand, Auto or Off. If using the Hand position, connect 24 VAC/DC to
the AUX terminal to power the device.

COMMON Input

COIL 24AC/DC Input

COIL 120VAC Input

AUX 24VAC/DC Input

COMMON Contact
NO Contact
NC Contact

OFF AUTO HAND

5. Secure the enclosure and reconnect power.