Veris VST121 Installation Instructions

RELAYS

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 qualied electrical personnel.

• Read, understand and follow the instructions before installing this product.

• Turn o all power supplying equipment before working on or inside the equipment.

• Use a properly rated voltage sensing device to conrm power is o. DO NOT DEPEND ON THIS PRODUCT FOR VOLTAGE INDICATION

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

DANGER

INSTALLATION GUIDE

V S T1 20 (- 4), V S T121(-4)

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 Auxiliar y Supply for HOA 24VAC/DC (supplied from a Class 2 or LVLE source)* Expected Relay Life Electrical (@ rated current) 100,00 0 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 surf ace) Agency Approvals UL508 open device listing; Installation Categor y III, pollution degree 2

*Class 2 source: A source that provides a Class 2 power supply as dene d by the NEC, NFPA70. LVLE: Low voltage limited energy, not capable of p roviding more than 30VAC/42.4VDC, 8A or 100 VA

INSTALLATION

Disconnect and lock out all power sources before beginning the installation.

1. Snap the VST into a mounted track of the appropriate size.

SNAP

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

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.

Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.

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

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 O. If using the Hand position, connect 24 VAC/DC to the AUX terminal to power the device.

OFF AUTO HAND

COMMON Input

COIL 24AC/DC Input

COIL 120VAC Input

AUX 24VAC/DC Input

5. Secure the enclosure and reconnect power.

COMMON Contact

NO Contact

NC Contact

COMMON Contact

NO Contact

NC Contact

VST120(-4), VST121(-4)

INSTALLATION GUIDE

DIMENSIONS

1.45"

(37 mm)

VST120 and VST121

2.75"

(70 mm)

VST120-4 and VST121-4

3.7"

(94 mm)

1.8"

(46 mm)

0.9"

(23 mm)

1.8"

(46 mm)

WIRING EXAMPLE

CONTROL PANEL

Relay

Contacts

24VAC/DC Coil Power

To Load

24VAC/DC Aux HOA Switch Power

(not available on all models)

24VAC/DC

POWER SUPPLY

DIGITAL

CONTROLLER

CONTACT AND COIL SPECIFICATIONS

TYPICAL COIL PERFORMANCE

Voltage Coil Current AC DC

24V.......................................... 75mA 32mA

120V........................................ 42mA -

CONTACT RATINGS

Ø .15”

(4 mm)

4.0"

(102 mm)

0.9"

(23 mm)

Resistive....... 20A@250VAC

10A@28VDC

Motor........... 120VAC, 1HP

Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.