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Siemens SINAMICS S120 Power Module 6SL3210-1PB21-4UL0 for industrial motor control

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Siemens 6SL3210-1PB21-4UL0

by Siemens

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OverviewElevate your industrial automation capabilities with the Siemens 6SL3210-1PB21-4UL0 SINAMICS S120 Power Module. This essential component is engineered for outstanding performance and dependability, providing accurate, efficient, and dynamic motor regulation in even the most challenging modular drive scenarios. Operating at 3AC 400 V and delivering a powerful 21 A output, this power module forms the foundation of high-performance machinery. It guarantees consistent functionality and energy efficiency across a wide array of industrial settings. Its inclusion in the SINAMICS S120 series highlights a commitment to advanced drive technology, offering unparalleled command and diagnostic features for intricate motion control tasks.Key Features Exact Motor Control: Achieve exceptional accuracy and dynamic response for complex motion sequences through the SINAMICS S120 architecture. High Power Delivery: Provides a substantial 21 A rated output current at 3AC 400 V, making it ideal for robust industrial motors. Modular and Adaptable Design: The modularity of the SINAMICS S120 facilitates straightforward integration, expansion, and flexibility within diverse plant configurations. Integrated Safeguards: Benefits from sophisticated built-in defensive features that protect both the module and connected devices from operational disturbances. Energy Efficiency: An optimized design contributes to lower energy consumption, reducing operational expenditures and supporting sustainable industrial practices. Rugged Industrial Construction: Constructed to endure demanding industrial environments, ensuring enduring reliability and minimal downtime. Extensive Diagnostics: Features embedded diagnostic capabilities that streamline troubleshooting and maintenance, enhancing operational continuity. Technical Specifications Siemens Identifier: 6SL3210-1PB21-4UL0 Series: SINAMICS S120 Rated Output Current: 21 A Output Power: Approximately 15 kW (at 400 V) Supply Voltage: 3AC 400 V ±10% Frequency: 47–63 Hz Cooling: Integrated air cooling system for optimal thermal management. Protection Rating: IP20, offering protection against solid objects larger than 12.5mm. Brake Chopper: Integrated for efficient energy dissipation during deceleration. Operating Temperature: –10 °C to +40 °C (without derating), suitable for various industrial settings. Certifications: CE, UL, cUL, ensuring adherence to international quality and safety standards. Applications CNC Machinery: Provides the precise control necessary for high-accuracy machining and fabrication processes. Packaging and Material Handling Systems: Optimizes speed and synchronization for efficient product movement and packaging. Robotics and Automation Equipment: Powers intricate robotic movements, enhancing repeatability and productivity in automated lines. Printing and Textile Machinery: Ensures consistent tension and speed control for superior output quality in continuous processing. Industrial Process Automation: Crucial for regulating various processes where exact speed, torque, and position control are paramount. Pumps and Fans: Improves energy efficiency and extends equipment life through optimized motor control. Why Choose This Model? Unrivaled Siemens Quality: Benefit from Siemens' long-standing reputation for innovation, engineering excellence, and reliability in industrial solutions. Optimized Performance: This Power Module is specifically engineered to maximize the performance of your SINAMICS S120 drive system, ensuring seamless operation. Future-Proof Scalability: The modular SINAMICS S120 platform allows for straightforward upgrades and expansions, adapting to evolving production requirements. Reduced Downtime: With its robust design and comprehensive diagnostic features, this module minimizes maintenance needs and maximizes uptime. Global Compliance: Certified to major international standards (CE, UL, cUL), ensuring suitability for worldwide deployment. Expert Support: Backed by Siemens' extensive global support network, offering peace of mind and access to specialized technical assistance. Order NowUpgrade your industrial operations with the Siemens 6SL3210-1PB21-4UL0 SINAMICS S120 Power Module. Contact us today to learn more or to place your order.FAQWhat is the primary function of the Siemens 6SL3210-1PB21-4UL0?The Siemens 6SL3210-1PB21-4UL0 is a Power Module designed for industrial automation, providing precise, efficient, and dynamic motor control for demanding modular drive applications within the SINAMICS S120 series.What is the output current and voltage of this power module?This power module delivers a robust 21 A output current at 3AC 400 V.What kind of cooling system does the 6SL3210-1PB21-4UL0 utilize?It features an internal air cooling system for optimal thermal management.Is this module suitable for harsh industrial conditions?Yes, it boasts a robust industrial construction built to withstand demanding conditions, ensuring long-term reliability and minimal downtime.What certifications does this Siemens power module hold?The module holds CE, UL, and cUL certifications, ensuring compliance with international quality and safety standards.

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PRODUCT DETAILS

Siemens 6SL3210-1PB21-4UL0

Overview

This is a genuine Siemens component from the Variable Frequency Drives family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Siemens catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Siemens automation ecosystem
  • Engineered to integrate inside Variable Frequency Drives installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Siemens equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Siemens catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Siemens platform with documented conversion notes for the Variable Frequency Drives family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Siemens Identifier: 6SL3210-1PB21-4UL0
  • Series: SINAMICS S120
  • Rated Output Current: 21 A
  • Output Power: Approximately 15 kW (at 400 V)
  • Supply Voltage: 3AC 400 V ±10%
  • Frequency: 47–63 Hz
  • Cooling: Integrated air cooling system for optimal thermal management.
  • Protection Rating: IP20, offering protection against solid objects larger than 12.5mm.
  • Brake Chopper: Integrated for efficient energy dissipation during deceleration.
  • Operating Temperature: –10 °C to +40 °C (without derating), suitable for various industrial settings.
  • Certifications: CE, UL, cUL, ensuring adherence to international quality and safety standards.

Applications

  • CNC Machinery: Provides the precise control necessary for high-accuracy machining and fabrication processes.
  • Packaging and Material Handling Systems: Optimizes speed and synchronization for efficient product movement and packaging.
  • Robotics and Automation Equipment: Powers intricate robotic movements, enhancing repeatability and productivity in automated lines.
  • Printing and Textile Machinery: Ensures consistent tension and speed control for superior output quality in continuous processing.
  • Industrial Process Automation: Crucial for regulating various processes where exact speed, torque, and position control are paramount.
  • Pumps and Fans: Improves energy efficiency and extends equipment life through optimized motor control.

Why Choose the 6SL3210-1PB21-4UL0?

  • Unrivaled Siemens Quality: Benefit from Siemens' long-standing reputation for innovation, engineering excellence, and reliability in industrial solutions.
  • Optimized Performance: This Power Module is specifically engineered to maximize the performance of your SINAMICS S120 drive system, ensuring seamless operation.
  • Future-Proof Scalability: The modular SINAMICS S120 platform allows for straightforward upgrades and expansions, adapting to evolving production requirements.
  • Reduced Downtime: With its robust design and comprehensive diagnostic features, this module minimizes maintenance needs and maximizes uptime.
  • Global Compliance: Certified to major international standards (CE, UL, cUL), ensuring suitability for worldwide deployment.
  • Expert Support: Backed by Siemens' extensive global support network, offering peace of mind and access to specialized technical assistance.

Availability & Shipping

  • In stock: 6SL3210-1PB21-4UL0 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 6SL3210-1PB21-4UL0 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Siemens

The Siemens 6SL3210-1PB21-4UL0 is a Power Module designed for industrial automation, providing precise, efficient, and dynamic motor control for demanding modular drive applications within the SINAMICS S120 series.

Machine down? We ship parts the same day.

New, surplus, and refurbished Siemens inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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