Schaffner FS25116-34-99 Transformer Module: Features, Applications & Buying Guide

The Schaffner FS25116-34-99 Transformer Module represents one of the most dependable solutions available for industrial power conditioning and electromagnetic compatibility (EMC) filtering. Manufactured by Schaffner, a global leader in electromagnetic interference (EMI) mitigation and power quality technologies, this transformer module has been engineered to deliver clean, stable power to sensitive industrial equipment in the most demanding environments. Whether you are maintaining an existing installation or building a new power distribution system, the FS25116-34-99 offers proven reliability and performance that operators around the world have come to trust.

Schaffner has earned an outstanding reputation for producing high-quality EMC components and power management solutions used in industrial automation, marine systems, renewable energy infrastructure, and medical equipment. The FS25116-34-99 Transformer Module carries that tradition forward, incorporating advanced filtering topology with robust transformer construction to suppress electrical noise and harmonics that can compromise system performance. With a weight of 13.38 kg, this unit features a substantial magnetic core and heavy-duty windings that ensure excellent electrical isolation and low insertion loss across a wide frequency range.

At Aeliya Marine Tech, we specialize in sourcing and supplying hard-to-find industrial automation components from the world's most respected manufacturers. Every used item we offer, including this Schaffner transformer module, undergoes a thorough inspection process to verify operational integrity and ensure it meets the performance standards your facility demands. With our 30-day warranty and free shipping, you can purchase with complete confidence knowing that your investment is protected.

Product Overview

The Schaffner FS25116-34-99 is a specialized power transformer module designed to provide both voltage transformation and comprehensive EMC filtering in a single integrated package. Its primary function is to protect downstream electrical and electronic equipment from conducted electromagnetic interference while simultaneously providing galvanic isolation between the power source and the load. This dual capability makes it an exceptionally cost-effective component for industrial power distribution systems where both power quality and operator safety are paramount.

Schaffner's expertise in EMC technology is reflected in every aspect of this module's design. The transformer core utilizes premium-grade magnetic steel laminations that minimize eddy current losses and core saturation, even under heavy continuous loading conditions. The winding assembly features carefully insulated copper conductors arranged to optimize magnetic coupling while reducing stray capacitance, which is a critical factor in achieving effective high-frequency noise attenuation. Additionally, the integrated filtering elements are precision-selected to address the specific frequency ranges most problematic in industrial environments.

The 70CPE00264 reference associated with this module indicates its configuration within Schaffner's extensive product range. This numbering system helps identify the specific voltage ratings, current capacity, filter topology, and mounting configuration of the transformer. The M4x25 mount specification ensures compatibility with standard industrial mounting rails and panels, simplifying installation in control cabinets, switchgear enclosures, and marine electrical rooms where space is typically limited and secure mounting is essential.

The FS25116-34-99 Transformer Module is designed for applications where clean power is not merely desirable but absolutely essential. Variable frequency drives (VFDs), servo motor controllers, programmable logic controllers (PLCs), and precision instrumentation all benefit from the conditioned power this module delivers. By attenuating both common-mode and differential-mode noise, the module prevents interference from propagating through the power distribution network, protecting not only the intended load but also adjacent equipment that might otherwise be affected by conducted emissions.

Technical Specifications

Key Features & Benefits

• Integrated EMC Filtering: The built-in filter stage provides effective suppression of electromagnetic interference across a broad spectrum, ensuring that sensitive equipment receives clean, noise-free power essential for accurate operation and longevity.
• Galvanic Isolation: The transformer design provides complete electrical separation between primary and secondary circuits, protecting personnel and equipment from voltage transients, ground loops, and fault currents.
• Robust Industrial Construction: With a weight of 13.38 kg and heavy-duty magnetic core construction, this module is built to withstand the harsh conditions found in industrial plants, marine vessels, and outdoor installations.
• M4x25 Mounting Compatibility: Standardized mounting dimensions allow quick and secure installation in control panels, switchgear, and electrical enclosures without the need for custom fabrication or adapters.
• Dual Functionality: Combining voltage transformation and filtering in one unit reduces panel space requirements, simplifies wiring, and lowers overall system cost compared to installing separate components.
• Proven Schaffner Quality: Backed by decades of EMC expertise, Schaffner products are trusted by engineers worldwide for their consistent performance, long service life, and compliance with international electromagnetic compatibility standards.
• Wide Application Range: Suitable for use with motor drives, servo systems, PLCs, CNC machinery, medical equipment, telecommunications gear, and renewable energy systems requiring clean power delivery.

Industrial Applications

The Schaffner FS25116-34-99 Transformer Module finds application across a diverse range of industrial sectors where power quality directly impacts operational efficiency and equipment reliability. Its combination of galvanic isolation and EMC filtering makes it particularly well-suited for environments where electrical noise is prevalent and where downtime carries significant cost implications.

Variable Frequency Drive Systems

VFDs are notorious for generating high-frequency harmonics and conducted EMI that can disrupt nearby electronics and communication systems. Installing the FS25116-34-99 between the mains supply and the drive significantly reduces the magnitude of these emissions, ensuring compliance with EMC regulations and preventing interference-related faults in adjacent control systems. The transformer also protects the drive from voltage spikes and transients originating on the utility grid, which are a leading cause of drive failures.

Industrial Automation & Control

Modern manufacturing facilities rely on a complex network of PLCs, HMIs, servo drives, and industrial PCs, all of which are susceptible to power quality issues. The Schaffner transformer module creates a clean power island for these sensitive devices, isolating them from the electrical noise generated by heavy machinery, welding equipment, and motor starting currents. This isolation is critical for preventing false triggers, data corruption, and unexpected shutdowns that can halt production lines.

Marine & Offshore Electrical Systems

Marine electrical environments present unique challenges due to the compact nature of shipboard installations, the presence of multiple power sources, and the corrosive salt-laden atmosphere. The FS25116-34-99 provides essential EMC filtering for navigation equipment, communication systems, and propulsion controls, while its rugged construction stands up to the vibration and temperature extremes typical of marine applications. Crouse-Hinds display modules and other marine-rated instrumentation particularly benefit from the clean power this transformer delivers.

Renewable Energy Installations

Solar inverters and wind turbine power converters generate substantial electromagnetic interference that must be controlled to meet grid connection requirements. The Schaffner transformer module serves as an effective line filter, attenuating conducted emissions before they reach the grid or affect monitoring and control electronics. Its robust design handles the continuous loading profiles typical of renewable energy applications, delivering years of trouble-free service in outdoor and exposed installations.

Medical & Laboratory Equipment

Healthcare facilities and research laboratories depend on sensitive diagnostic and analytical instruments that require exceptionally clean power for accurate results. The FS25116-34-99 provides the high level of isolation and noise suppression necessary for these applications, helping to ensure patient safety and data integrity while meeting the stringent EMC standards applicable to medical electrical equipment.

Product Configuration & Setup

Proper installation and configuration of the Schaffner FS25116-34-99 Transformer Module are essential to achieving the full benefits of its EMC filtering and isolation capabilities. While specific wiring arrangements will depend on your particular application and local electrical codes, the following guidelines provide a general framework for successful deployment.

The module should be mounted using the M4x25 mounting points on a flat, conductive surface within a grounded metal enclosure. This arrangement provides both mechanical security and optimal shielding effectiveness. The mounting surface should be clean and free of paint or other non-conductive coatings at the contact points to ensure a low-impedance ground connection. For maximum EMI suppression, position the transformer as close as possible to the equipment it is protecting, minimizing the length of unfiltered power conductors.

All wiring to the transformer should utilize shielded cable with the shield bonded to the enclosure ground at both ends. The grounding scheme is critical for effective filter operation; a single-point ground topology is generally recommended to prevent ground loop currents that can actually increase noise levels in some situations. The transformer case should be bonded to protective earth using a dedicated conductor of adequate cross-section, independent of any signal or neutral grounding conductors.

Thermal management is another important consideration. At its rated load, the transformer will generate heat due to copper losses in the windings and core losses in the magnetic material. Ensure that the installation enclosure has adequate ventilation or forced air circulation to maintain the ambient temperature within the transformer's rated limits. Excessive operating temperatures will degrade insulation materials over time and reduce the service life of the unit. If the transformer is to be operated at elevated ambient temperatures, consult the manufacturer documentation for appropriate derating factors.

When integrating the FS25116-34-99 into a system with other power quality components, such as GE power supply modules or Woodward power supply units, pay careful attention to the sequencing and coordination of protective devices. The transformer should be protected by appropriately rated fuses or circuit breakers on both primary and secondary sides, sized to clear fault currents quickly while avoiding nuisance tripping during normal inrush conditions.

Related Products from Aeliya Marine 

Aeliya Marine Tech maintains one of the industry's most comprehensive inventories of industrial automation components, power electronics, and control system parts. The following products complement the Schaffner FS25116-34-99 Transformer Module and may be of interest for your power distribution or control system projects:

• EPCOS 70CPE08420 Power Conversion Unit — A high-capacity AC power conversion module rated for 380-480VAC at 32A. This 15.05 kg unit from TDK EPCOS provides industrial-grade power conversion and is ideal for integration with filtered transformer systems.
• Cutler-Hammer 1903-2 DC Magnet Coil — A 125V DC magnet coil rated at 0.33A, suitable for industrial contactors and motor control circuits that require reliable electromagnetic actuation.
• Crouse-Hinds Workstation Display Module (Eaton) — An ATEX-certified display module operating at 18-36VDC with IP66 protection, designed for hazardous area installations in industrial and marine environments.
• GE Power Supply Module IS2020RKPSG2A — A General Electric power supply module providing regulated DC output for industrial control systems and instrumentation applications.
• Woodward Power Supply Module 5466-1002 — Accepts 180-264 VAC at 50/60 Hz, providing reliable DC power for turbine control systems, generator regulators, and industrial automation platforms.
• B&R Servo Motor 8LSP93 — Precision servo motor for motion control applications, ideal for integration with filtered power systems requiring clean sinusoidal power delivery.

Frequently Asked Questions (FAQ)

Q1: What does the Schaffner FS25116-34-99 Transformer Module do?

A: The Schaffner FS25116-34-99 is a power transformer module that provides both voltage transformation and electromagnetic compatibility (EMC) filtering. It delivers clean, noise-free power to sensitive industrial equipment while providing galvanic isolation between the power source and the load. The integrated filter suppresses electromagnetic interference across a broad frequency spectrum, making it ideal for applications involving variable frequency drives, servo systems, PLCs, and precision instrumentation.

Q2: What condition is this transformer module in?

A: This Schaffner FS25116-34-99 Transformer Module is offered in used condition. Every unit at Aeliya Marine Tech undergoes comprehensive inspection and functional testing to verify that it meets operational specifications. The module is backed by our 30-day warranty, giving you peace of mind with your purchase.

Q3: What is the significance of the 70CPE00264 reference number?

A: The reference number 70CPE00264 is an internal identification code used by Schaffner to denote the specific configuration of this transformer module within their product range. It indicates details such as voltage ratings, current capacity, filter topology, and mounting specifications. This number helps ensure that you receive the correct replacement or matching unit for your system.

Q4: How does the M4x25 mounting specification affect installation?

A: The M4x25 mount specification means the transformer module uses four metric M4 threaded fasteners with a 25mm spacing pattern for mechanical attachment. This standardized mounting arrangement is compatible with most industrial DIN rails, equipment chassis, and panel installations, allowing for straightforward installation without custom brackets or adapters.

Q5: Can this transformer module be used in marine applications?

A: Yes, the Schaffner FS25116-34-99 is well-suited for marine and offshore installations due to its robust construction and excellent EMC filtering characteristics. Marine electrical environments benefit greatly from the galvanic isolation and noise suppression this module provides, particularly for sensitive navigation, communication, and control systems. The heavy-duty construction also withstands the vibration and temperature conditions typical of shipboard installations.

Q6: What is the weight and why is it significant?

A: The FS25116-34-99 weighs 13.38 kg, which reflects its substantial magnetic core and heavy-gauge winding construction. This considerable mass is indicative of a high-quality industrial transformer designed for continuous operation under demanding load conditions. The weight also provides mechanical stability and resistance to vibration, both important factors in industrial installations.

Q7: Does Aeliya Marine Tech provide technical support for this product?

A: Yes, Aeliya Marine Tech provides comprehensive technical support for all products we sell. Our team of experienced engineers can assist with installation guidance, application questions, compatibility verification, and troubleshooting. We also offer our 30-day warranty and free shipping on this product for your complete satisfaction.

External Technical Resources

For additional technical information about Schaffner products and electromagnetic compatibility standards, the following external resources may be helpful:

• Schaffner Official Website — The manufacturer's official portal provides comprehensive product datasheets, application notes, white papers on EMC best practices, and technical documentation for their full range of power quality and electromagnetic compatibility solutions.
• Schaffner Group on Wikipedia — An overview of the Schaffner Group's corporate history, market position, product portfolio, and contributions to electromagnetic compatibility technology across industrial, automotive, and medical sectors.

Why Choose Aeliya Marine Tech

Aeliya Marine Tech has established itself as a trusted global supplier of industrial automation components, serving clients across marine, offshore, manufacturing, and energy sectors. Our commitment to quality, competitive sourcing, and customer satisfaction sets us apart in the industrial parts marketplace.

Every product in our inventory, including this Schaffner FS25116-34-99 Transformer Module, is sourced from reputable channels and subjected to rigorous quality inspection before being listed for sale. We understand that equipment downtime in industrial environments can cost thousands of dollars per hour, which is why we focus on delivering reliable, tested components that you can install with confidence.

Our free worldwide shipping and 30-day warranty demonstrate our commitment to your satisfaction. Whether you are maintaining critical shipboard systems, upgrading a manufacturing line, or building a new power distribution panel, Aeliya Marine Tech has the products and expertise to support your project from component selection through successful commissioning.