WEG SSW900D0312T5E3B - SOFT-STARTER SSW900D0312T5E3B
WEG

SSW900D0312T5E3B

UPC: 7909712443736

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Overview

The WEG SSW900D0312T5E3B is a soft-starter designed for three-phase induction motors. Manufactured by WEG, it controls motor startup and shutdown by gradually ramping voltage. This reduces electrical and mechanical stress on motor windings, bearings, and connected equipment, preventing current surges and nuisance tripping. It is suitable for applications like pumps, compressors, conveyors, and fans, ensuring smooth acceleration and extended equipment life. The SSW900D0312T5E3B offers adjustable ramp times for tailored acceleration/deceleration profiles, built-in motor protection (overload, phase imbalance, under/overvoltage), and a compact, panel-ready design for easy integration. It contributes to energy efficiency by lowering peak demand charges and reducing stress on electrical infrastructure. Applications include water/wastewater, HVAC, material handling, mining, and oil & gas.
  • Smooth motor startup and stop with adjustable ramp times
  • Integrated motor protection: overload, phase imbalance, voltage
  • Compact, panel-ready design for easy installation
  • Reduces inrush current for energy efficiency and infrastructure protection
  • Versatile for industrial applications like pumps, fans, and conveyors

Specifications

Connection Type
Screw Terminal / Wiring
Frequency
50/60 Hz
Mounting Type
Panel-mounted
Poles
3-Phase
Series
SSW900
Package Weight (Imperial)
30.8 LB
MT-63 34A 3D SCREW EXP (MT63-3D-34-S-E)

1311001000

MT-63 34A 3D SCREW EXP (MT63-3D-34-S-E)
MT-63 19A 3D SCREW EXP (MT63-3D-19-S-E)

1311000700

MT-63 19A 3D SCREW EXP (MT63-3D-19-S-E)
CONTACT BLOCK BU BLB-02

BLB-02

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

BFB-40

CONTACT BLOCK BU BFB-40
Copper One-Hole Lug, 45 Degree Bend Standard Barrel, Peep Hole, Max 35kV, Wire Size #1 AWG, 1/2 Inch Bolt Size, Silver Plated,Die Code 37, Die Color Code Green

54150UFSP

Copper One-Hole Lug, 45 Degree Bend Standard Barrel, Peep Hole, Max 35kV, Wire Size #1 AWG, 1/2 Inch Bolt Size, Silver Plated,Die Code 37, Die Color Code Green
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.

Frequently Asked Questions

What is the purpose of the WEG SSW900D0312T5E3B soft starter?

The WEG SSW900D0312T5E3B soft starter controls motor startup and shutdown by gradually ramping voltage, reducing electrical and mechanical stress on motors and connected equipment.

What types of industrial applications is this soft starter suitable for?

This soft starter is ideal for applications such as pumps, compressors, conveyors, fans, and HVAC systems, where smooth motor operation is critical.

What motor protection features are included in the SSW900D0312T5E3B?

The soft starter includes integrated protection features such as overload, phase imbalance, and under/overvoltage detection to safeguard motors.

How does this soft starter contribute to energy efficiency?

By controlling inrush current during startup, the soft starter lowers peak demand charges and reduces stress on electrical infrastructure, improving energy efficiency.

What are the benefits of the compact design of the SSW900D0312T5E3B?

Its compact, panel-ready design allows for seamless integration into control panels and switchgear, simplifying installation, commissioning, and future upgrades.

Frequently Asked Questions about WEG

What certifications and standards do WEG products comply with?

WEG products meet extensive international standards across multiple critical categories, including safety, electromagnetic compatibility (EMC), functional safety, and regulatory compliance. Key certifications include UL, cUL, CE, TÜV Rheinland, and compliance with international standards such as EN 61800 series, IEC 61508, ISO 13849-1, and directives like Low Voltage (2014/35/EU), EMC (2014/30/EU), and RoHS. Their products are certified for safe operation in various industrial environments, with specific standards covering electrical safety, thermal performance, electromagnetic immunity, and environmental protection.

What is WEG's warranty policy?

WEG offers an 18-month standard warranty for automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Repairs must be performed by authorized WEG service, and the warranty is limited to the replacement or repair of the product itself, excluding consequential damages. Extended warranty options are available, including purchasing additional coverage at 2.5% of the product's selling price per year, up to 4 additional years.

What industries and applications are WEG products used for?

WEG products are extensively used across multiple industrial sectors, including packaging equipment, material handling, food processing, pumps, medical/lab equipment, door/gate openers, office machinery, and lawn/garden applications. Their versatile DC motors and variable frequency drives (VFDs) are designed for general industrial use, with solutions ranging from off-the-shelf products to custom OEM designs that meet UL/CSA standards for diverse manufacturing and processing environments.

What technical support does WEG offer?

WEG offers comprehensive technical support through multiple channels, including a dedicated Automation Service Department accessible via toll-free phone (1-877-934-3748) and email ([email protected]). They maintain a global network of accredited service centers worldwide, which customers can locate on their website. Additionally, WEG provides warranty support and technical assistance for their industrial automation products, with pre-approval required for warranty repairs.

What are the key features of WEG products?

WEG products feature advanced industrial automation technologies with key characteristics including high performance, flexibility, and connectivity. Their flagship CFW900 Variable Speed Drive demonstrates core product strengths: intelligent thermal management, built-in safety functions, IoT readiness, advanced energy saving capabilities, and comprehensive communication protocols. WEG drives offer robust performance with features like 150% overload capacity, modern graphic HMI, plug-and-play expansion modules, and compatibility across multiple industrial segments including food and beverage, pulp and paper, and manufacturing.

What communication protocols do WEG products support?

WEG products support multiple industrial communication protocols across their product lines, including EtherNet/IP, Modbus-TCP, Modbus-RTU, CANopen, and optional protocols like Profibus-DP and DeviceNet. Specifically, the PLC500 offers 2x Gigabit Ethernet Ports, 1x CAN Port, and 1x RS485 port, enabling seamless integration with major industrial communication networks.

What environmental ratings do WEG products have?

WEG products feature multiple environmental ratings and protection classes. They offer Protection Class 3C2 as a standard coating and Protection Class 3C3 as an optional extra coating, both compliant with IEC 60721-3-3. Environmental specifications include air relative humidity from 5% to 95% non-condensing, altitude ratings up to 1,000m standard (with current derating above that), and Pollution Degree 2 classification with non-conductive pollution requirements.

What accessories are available for WEG products?

WEG offers a comprehensive range of accessories across multiple product lines. For variable frequency drives like the CFW900, accessories include I/O expansion modules, communication modules, encoder modules, temperature transducer modules, relay output modules, and HMI accessories. These accessories expand communication capabilities, input/output functions, and application flexibility. Most accessories are interchangeable between drive frames and can be installed in backplane slots, with communication network accessories limited to one per variable speed drive.

What are the main product lines offered by WEG?

WEG offers a comprehensive range of industrial automation products, including variable frequency drives (CFW series like CFW100, CFW300, CFW500), soft starters (SSW series including SSW05, SSW07, SSW900), and the innovative Motion Fleet Management (MFM) system for predictive maintenance and asset monitoring. Their product lines are designed to support industrial automation needs across various sectors, providing solutions for motor control, fleet management, and operational efficiency.

How are WEG products typically installed?

WEG products are typically installed with careful attention to mounting specifications, protection ratings, and airflow requirements. For variable speed drives like the CFW900, installation methods include surface mounting, flange mounting, and side-by-side configurations with specific clearance guidelines. Installers must follow precise dimensional requirements for each product frame size, ensuring proper ventilation and electrical connections.