Littelfuse EVR-2A09-1 - The EVR Series printed circuit board (PCB) two-pole (2P) ac power relay is designed to switch EV charging applications on and off. Its extended contact gap of greater than 3 mm provides better isolation and allows for usage in higher elevation environments. The very compact form factor has a low temperature rise and heavy-duty power switching current up to 40 A/277 V ac. This relay family enables compliance with all EV charging infrastructure standards such as IEC 62955, IEC 62752 and UL 2231.
Littelfuse

EVR-2A09-1

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Overview

The Littelfuse EVR-2A09-1 is a high-performance two-pole (2P) AC power relay engineered for electric vehicle (EV) charging infrastructure, offering unmatched reliability, safety, and compliance in demanding applications. Designed to meet the rigorous demands of modern EV charging systems, this compact relay combines robust power switching capabilities with superior isolation and environmental resilience. With a maximum current rating of 40 A at 277 V AC, the EVR-2A09-1 is optimized for heavy-duty switching in commercial and industrial EV charging stations, including public charging networks, fleet depots, and workplace charging solutions. Key features of the EVR-2A09-1 include an extended contact gap of over 3 mm, which significantly enhances dielectric strength and reduces the risk of arcing—critical for high-altitude installations where air density is lower. This design choice ensures consistent performance and safety across a wide range of operating conditions, from sea level to elevated environments. The relay’s compact form factor maximizes space efficiency in control panels and charging station enclosures, making it an ideal choice for space-constrained installations without compromising on power handling or durability. Compliance with industry-leading standards is a cornerstone of the EVR series. The EVR-2A09-1 meets IEC 62955 (residual current devices for EV charging), IEC 62752 (in-cable control and protection devices), and UL 2231 (personnel protection systems for EV supply equipment), ensuring seamless integration into global EV charging infrastructure. These certifications not only streamline regulatory approvals but also provide end-users with confidence in the relay’s ability to deliver safe, reliable operation under fault conditions, including ground fault and overcurrent scenarios. Professionals in the EV charging industry select the Littelfuse EVR-2A09-1 for its proven performance in high-switching-frequency applications, such as fast-charging stations where relays must endure thousands of cycles without degradation. The relay’s low temperature rise during operation minimizes thermal stress on surrounding components, extending the lifespan of the entire charging system. Additionally, its heavy-duty contact design ensures minimal contact resistance, reducing energy loss and maintaining efficiency even under continuous load. Littelfuse, a global leader in circuit protection and switching solutions, has built a reputation for innovation and reliability in the power electronics industry. With decades of experience serving automotive, industrial, and renewable energy sectors, Littelfuse’s relays are trusted by engineers and system integrators worldwide. The EVR series, including the EVR-2A09-1, reflects the company’s commitment to advancing EV charging technology through products that balance performance, safety, and compliance. Whether deployed in Level 2 AC charging stations, DC fast chargers, or grid-tied energy storage systems, the EVR-2A09-1 delivers the durability and precision required for next-generation charging infrastructure. Installation of the EVR-2A09-1 is straightforward, thanks to its standardized footprint and clear terminal markings, which simplify wiring and reduce commissioning time. The relay is designed for PCB mounting, making it a natural fit for compact, modular charging station designs. For applications requiring additional protection, Littelfuse offers complementary products such as fuses and surge protection devices to create a holistic safety solution. By choosing the EVR-2A09-1, engineers and procurement professionals gain a future-proof component that aligns with the rapid evolution of EV charging standards and technologies.
  • 40 A/277 V AC heavy-duty power switching for EV charging stations
  • Extended contact gap (>3 mm) for superior isolation and high-altitude performance
  • Compact PCB-mount design with low temperature rise for space efficiency
  • Compliant with IEC 62955, IEC 62752, and UL 2231 for global EV infrastructure standards
  • Trusted Littelfuse quality for reliable, long-life operation in demanding applications

Specifications

Connection Type
PCB
Current Rating
40 A
Mounting Type
PCB Mount
Poles
2P
Series
EVR
Size
Compact
Voltage Rating
277 V AC
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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.