NSi Industries T-603 - Class 2 Signaling Transformers.  Low voltage power source for residential, commercial and industrial uses. Multiple Tap Secondaries, 8 or 16 volts with 20 VA, or 24 Volts with 30 VA
NSI Industries

T-603

UPC: 781747615824


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Overview

NSI Industries T-603 Class 2 signaling transformer delivers reliable low-voltage power for residential, commercial, and industrial applications. Available in 20 VA (8/16V) or 30 VA (24V) configurations, this transformer provides stable secondary voltage with multiple tap options to match system requirements. Designed for Class 2 circuits, it ensures safe, compliant power delivery for signaling systems, HVAC controls, and low-voltage lighting. The compact design supports flexible installation in control panels, junction boxes, or DIN rail systems. With NSI’s reputation for durable industrial components, the T-603 is a trusted choice for engineers and contractors seeking dependable performance in low-voltage distribution. Specify the correct VA and voltage tap during selection to match your load demands.
  • Class 2 compliant transformer for safe low-voltage power distribution
  • Available in 20 VA (8V/16V) or 30 VA (24V) configurations
  • Multiple secondary taps enable flexible voltage selection
  • Compact design suitable for panel, junction box, or DIN rail mounting
  • NSI Industries engineered for industrial-grade reliability

Specifications

Application
High power for long wire runs or for applications requiring greater power such as door openers. Ideal for large apartments and building elevators.
Mounting
plastic and metal back boxes
Mounting Type
DIN rail or control panel/junction box
Primary Voltage
120 V
Secondary Voltage
8 V
Series
Class 2 Signaling Transformers
Special Features
Easy install, low voltage. Will safely take themselves off line when they overheat.
Standard
UL; CSA
Type
Transformer
Voltage Rating
8/16/24 V
Package Dimensions (L x W x H)
3.5 IN x 2.5 IN x 2.5 IN
Package Dimensions (L x W x H)
8.89 cm x 6.35 cm x 6.35 cm
Package Weight (Imperial)
1.700 L
Package Weight (Metric)
0.771 kg

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Frequently Asked Questions

What are the dimensions of the T-603?

The dimensions are 2 11/32 inches (A), 2 13/32 inches (B), and 2 7/32 inches (C).

What are the dimensions of the T-603?

The dimensions are 2 11/32 inches (A), 2 13/32 inches (B), and 2 7/32 inches (C).

What are the voltage options for the T-603?

The T-603 offers multiple tap secondaries of 8 or 16 volts with 20 VA, or 24 volts with 30 VA.

What are the voltage options for the T-603?

The T-603 offers multiple tap secondaries of 8 or 16 volts with 20 VA, or 24 volts with 30 VA.

What applications is the T-603 suitable for?

The T-603 is ideal for high power applications such as door openers, large apartments, and building elevators.

What applications is the T-603 suitable for?

The T-603 is ideal for high power applications such as door openers, large apartments, and building elevators.

Is the T-603 suitable for commercial use?

Yes, the T-603 is designed for residential, commercial, and industrial uses.

Is the T-603 suitable for commercial use?

Yes, the T-603 is designed for residential, commercial, and industrial uses.

What is the power capacity of the T-603?

The T-603 has a power capacity of 20 VA for 8 or 16 volts and 30 VA for 24 volts.

What is the power capacity of the T-603?

The T-603 has a power capacity of 20 VA for 8 or 16 volts and 30 VA for 24 volts.

Frequently Asked Questions about NSi Industries

What technical support does NSi Industries offer?

NSi Industries offers dedicated technical support through their toll-free technical support line at 888.500.4598. They are committed to customer satisfaction and promise to make every reasonable effort to remedy any product or service issues. Additionally, customers can contact their customer service team at 800.321.5847 or email [email protected] for further technical assistance.

What are the key features of NSi Industries products?

NSi Industries products feature exceptional versatility, reliability, and safety across multiple industrial automation categories. Key features include insulation piercing connectors with no wire stripping required, watertight and corrosion-free designs, wide wire range compatibility (from #14 AWG to 750 MCM), and the ability to install on energized conductors. Their product lines like Easy-Tap™ Connectors and TORK® Digital Timers demonstrate advanced capabilities such as turbo spacers, double shear-head bolts, astronomic scheduling, and enhanced switching technologies.

What environmental ratings do NSi Industries products have?

NSi Industries enclosures feature robust environmental ratings, including IEC 60529 IP66 certification, NEMA Type 1, 2, 3, 4, 4X, 12, and 13 ratings, and UL/CSA standards. Their products are designed for both indoor and outdoor applications, with protection against dust, water, corrosion, and extreme temperatures ranging from -40°F to 266°F.

How are NSi Industries products typically installed?

NSi Industries products are typically installed using detailed mechanical and digital wiring diagrams that specify precise connection methods for various voltage configurations (120V, 208V, 240V, 277V, 480V). Installation involves carefully following product-specific wiring schematics, which include clear terminal block connections, ground wire specifications, and phase alignment requirements. Professional electricians and technicians should reference the specific product's wiring diagram to ensure correct installation and electrical compliance.

What industries and applications are NSi Industries products used for?

NSi Industries provides electrical and automation products for diverse industrial applications, including lighting control, electrical enclosures, wire management, connectors, and sensor technologies. Their product lines serve commercial, industrial, and infrastructure markets with solutions for electrical infrastructure, control systems, and safety-critical environments.

What are the main product lines offered by NSi Industries?

NSi Industries offers a comprehensive range of industrial products including TORK® Photocontrols, Polaris™ Lighting Controls, Easy-Twist™ Grounding Solutions, Miniterms, Cable Ties, Connectors, Enclosures, Occupancy Sensors, and Wire Management systems. Their product lines span electrical components, control devices, and industrial automation accessories designed for diverse applications in commercial and industrial settings.

What accessories are available for NSi Industries products?

NSi Industries offers a range of accessories for their product lines, including photocontrol accessories like replacement caps, mounting brackets, and receptacles. Specific accessories include shorting caps, open caps, 3-pin and 7-pin receptacles, and utility mounting brackets for conduit photocontrols. For specialized applications, NSi recommends contacting their customer service team to discuss custom accessory needs.