Littelfuse CON-3/120/40 - 3P 120V 40A CONTACTOR
Littelfuse

CON-3/120/40

UPC: 811068030577

Documents & Media
Specification Sheet

Contact for Pricing

Minimum Qty: 25

Multiplier: 25

*Contact for lower quantities*

Overview

The **Littelfuse 3P 120V 40A CONTACTOR (SKU: CON-3/120/40)** is a high-performance electrical switching device engineered for industrial control applications where reliability, durability, and precision are critical. Designed to handle **40A at 120V**, this three-pole contactor delivers robust performance in demanding environments, making it an essential component for motor control, HVAC systems, lighting circuits, and industrial automation. With a proven track record in heavy-duty applications, the CON-3/120/40 ensures consistent operation under continuous cycling, voltage fluctuations, and harsh operating conditions—key factors that set it apart in the competitive industrial contactor market. **Key Features and Technical Advantages:** This Littelfuse contactor is built to meet the rigorous demands of modern industrial systems. Its **three-pole design** enables simultaneous control of three separate circuits, making it ideal for applications requiring synchronized switching, such as three-phase motors or multi-load distribution panels. The **120V AC rating** ensures compatibility with standard industrial control voltages, while the **40A continuous current rating** provides ample headroom for moderate to high-load applications without overheating or premature wear. The unit’s **robust construction** includes high-quality silver-cadmium oxide contacts, which offer excellent conductivity and resistance to arc erosion—critical for long service life in high-cycle applications. **Industry Applications and Use Cases:** The **Littelfuse 3P 120V 40A CONTACTOR** is widely used across multiple industrial sectors, including manufacturing, commercial HVAC, water treatment, and renewable energy systems. In **motor control applications**, it serves as a reliable switching mechanism for pumps, fans, compressors, and conveyor systems, where frequent start/stop cycles are common. For **HVAC systems**, this contactor is often deployed in rooftop units, air handlers, and chillers to control compressors and blower motors efficiently. It is also a preferred choice in **lighting control panels** for warehouses, stadiums, and large commercial facilities, where centralized switching of high-wattage circuits is required. Additionally, the CON-3/120/40 is well-suited for **automation and control panels** in food processing, automotive manufacturing, and material handling systems, where dependable performance is non-negotiable. **Installation, Safety, and Compliance Considerations:** Proper installation of the **CON-3/120/40** is essential to maximize safety and performance. The contactor should be mounted in a **NEMA-rated enclosure** or control panel that provides adequate ventilation and protection against dust, moisture, and mechanical damage. Electrical connections must comply with **NEC (National Electrical Code)** requirements, including proper wire sizing, torque specifications, and grounding practices. The unit’s **UL and CE certifications** ensure compliance with international safety standards, making it suitable for global industrial deployments. For high-cycle applications, professionals often pair the contactor with **snubber circuits or arc suppressors** to extend contact life and reduce electromagnetic interference (EMI). **Why Choose Littelfuse for Industrial Contactors?** Littelfuse is a globally recognized leader in circuit protection and industrial control solutions, with over a century of innovation and reliability. The company’s **CON-3/120/40 contactor** exemplifies its commitment to engineering excellence, combining **premium materials, rigorous testing, and field-proven performance** to deliver a product that engineers and maintenance teams can trust. Unlike generic alternatives, Littelfuse contactors undergo extensive **thermal cycling, vibration, and short-circuit tests** to ensure consistent operation in real-world conditions. With a **global distribution network** and dedicated technical support, Littelfuse provides not just a product, but a **complete solution**—from selection and sizing to installation and troubleshooting. For industries where downtime is costly and reliability is paramount, the **Littelfuse 3P 120V 40A CONTACTOR** stands as a benchmark for performance, durability, and peace of mind.
  • 3-pole design for synchronized circuit control
  • 120V AC rating with 40A continuous current capacity
  • Silver-cadmium oxide contacts for high conductivity and arc resistance
  • UL and CE certified for global industrial compliance
  • Ideal for motor control, HVAC, lighting, and automation systems

Specifications

Connection Type
Screw Terminal
Current Rating
40 A
Material
Silver-Cadmium Oxide
Mounting Type
Panel Mount
Poles
3P
Series
CON
Voltage Rating
120 VAC
GMD-16M DC240V 3W 1b EXP (GMD16M-30-01-UD-3W-S-E)

1270040900

GMD-16M DC240V 3W 1b EXP (GMD16M-30-01-UD-3W-S-E)
MT-63 34A 3D SCREW EXP (MT63-3D-34-S-E)

1311001000

MT-63 34A 3D SCREW EXP (MT63-3D-34-S-E)
One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.

LCMA6-8-C

One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.
Ground Lug

DNGL

Ground Lug
CONTACT BLOCK BU BLB-02

BLB-02

CONTACT BLOCK BU BLB-02
CONTACT BLOCK BU BFB-40

BFB-40

CONTACT BLOCK BU BFB-40

Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.