What Bonitron does

Bonitron is a privately held American industrial electronics manufacturer founded in 1962 in Nashville, Tennessee, specializing in power electronics solutions for AC variable frequency drives (VFDs). The company designs and builds products that solve two primary problems in drive-driven industrial processes: undervoltage (ride-through/sag protection) and overvoltage (regenerative braking dissipation or regeneration back to the line). Its core technology spans high-power designs up to 600 VAC, microprocessor and embedded firmware design, and thermal engineering for industrial-grade power electronics.

The product portfolio is organized across seven categories: Energy Storage (ultracapacitor and battery modules); Undervoltage Solutions (complete ride-through systems, voltage regulators, isolated chargers, capacitor-based backup); Overvoltage Solutions (braking transistors, braking resistors, line regeneration units, and dynamic safety brakes for servo motors); Power Supplies and Common Bus (single and three-phase supplies, regenerative DC bus supplies, buffer modules, diodes, fusing); Power Quality (line noise filters, 12/18 pulse harmonic solutions); Maintenance (capacitor formers, ultracapacitor testers, regenerative energy monitors); and Safety (isolation switches, safety indicators). All products are designed and manufactured in the United States.

Bonitron operates a hybrid direct-to-customer model combining a public e-commerce storefront with disclosed unit pricing, a network of regional sales representatives for enterprise/complex applications, and a content-led demand generation engine (YouTube training channel, monthly webinars). It maintains compatibility documentation for 15+ major drive manufacturers (Rockwell Automation, ABB, Schneider Electric, Mitsubishi, Yaskawa, Siemens, Danfoss, Eaton, and others), positioning itself as the default add-on/retrofit supplier across heterogeneous industrial drive fleets. The company is family-owned (Keith Benson, son of founder Robert Benson, serves as President), self-funded with no institutional investors, and ships to the US, Canada, and Mexico. Vertical end markets include oil and gas, marine, HVAC, material handling, agriculture, logging/sawmill, and general industrial manufacturing.

Name

Bonitron

Legal name

Bonitron Inc.

Website

https://bonitron.com

Company type

Private

Founded year

1962

Operating status

Operating

Headcount range

101–250 employees

Short description

Bonitron is a privately held, family-owned industrial electronics manufacturer founded in 1962 in Nashville, TN, that designs and sells power electronics (braking, ride-through, regeneration, and power supply modules) for AC variable frequency drives used across oil and gas, marine, HVAC, material handling, and general industrial customers.

Ownership category

akta.pro rank

Product category

Industrial Power Electronics for AC Drives

NAICS

Relay and Industrial Control Manufacturing (335314)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600), Switchgear & Switchboard Apparatus (3613), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Motor Control Centers & Motor Protection (Overload Relays, Protection, Monitoring) (IMAGACAI)

akta.pro secondary industries

Low-Voltage Switchboards & Panelboards (LV distribution panels, MCCs, switchboards) (IMAGAEAA), Industrial Control Panels & Enclosures (Panel Building, MCCs, Integration) (IMAGABAJ)

Keywords

• Industrial power electronics
• AC drive solutions
• Braking transistors resistors
• Undervoltage ride-through
• Regenerative line drives

Headquarters

HQ city

Nashville

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Hardware Sales: Bonitron generates revenue through the sale of industrial electronic hardware products including braking transistors, resistors, power supplies, voltage regulators, and maintenance equipment. Products are sold as one-time purchases with various configurations based on voltage and current ratings.
2. Custom Engineering Solutions: The company develops custom solutions for specific customer problems, creating engineered products tailored to industrial applications. This includes designing and developing industrial grade power electronics systems.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Bonitron designs and manufactures industrial power electronics that protect and enhance AC drive-driven processes. Its product portfolio addresses overvoltage (braking transistors, braking resistors, line regeneration units, dynamic safety brakes for servo motors) and undervoltage (ride-through complete systems, voltage regulators, isolated chargers) conditions, along with power supplies, common bus solutions, power quality filters, and maintenance testing equipment for ultracapacitors and capacitors.

Product overview

Bonitron is an industrial electronics company founded in 1962 in Nashville, TN, specializing in solutions for AC drives and variable frequency drives (VFDs). The product portfolio is organized into a multi-category system addressing power quality challenges in drive applications. The core offering centers on Overvoltage Solutions (braking transistors including M3675T, M3575T, M3452 series; braking resistors including M3575R and M3775R; line regeneration units M3545 and M3645; and dynamic safety brake M3500DB for servo motors) and Undervoltage Solutions (complete ride-through systems including S3534EC, S3534CR, S3460UR; voltage regulators M3460 and M3534; battery chargers M5628 and M3528; and capacitor-based solutions). Supporting these are Power Supplies and Common Bus products (single-phase M3712 and three-phase M3713 power supplies; regenerative supplies M3545P and M3645P; buffer modules M7009R&C; common bus diodes and fuses), Power Quality products (M3484 line noise filters; 12 & 18 pulse solutions for harmonic reduction), Maintenance equipment (ultracapacitor testers M3628UMT and M3628UCT; capacitor formers M3628ACF and M3628PCF; regenerative energy monitor M3660REM), and Safety products (BSP isolation switch and BSI safety indicator). Energy Storage solutions include ultracapacitor modules M5628UC and M3528B. The company serves diverse industries including agriculture, boilers, centrifuges, HVAC, logging/sawmill, marine, material handling, and oil & gas.

Differentiator

Problem solved

Functional benefit

Products and services

• M5628UC Energy Storage Ultracapacitor energy storage solution for AC drives that provides backup power and ride-through capability during voltage sags or outages, designed for industrial users of variable frequency drives.
• M3528B Energy Storage Battery-based energy storage module for undervoltage protection and power backup in AC drive systems.
• S3534EC Complete System Complete undervoltage protection system with integrated components for seamless power backup in AC drive applications, designed for industrial users.
• S3534CR Complete System Complete ride-through solution with integrated capacitors for protecting AC drives from voltage sags.
• S3460UR Complete System Universal ride-through undervoltage protection system for AC drives.
• Voltage Regulators (M3460, M3534) Electronic voltage regulators (M3460 and M3534) that maintain stable DC bus voltage during utility sags or interruptions for AC drives.
• M5628 Isolated Charger Isolated battery charger for charging and maintaining backup battery systems in undervoltage ride-through applications.
• M3528 Charger (Legacy) Legacy battery charger model for undervoltage backup systems, superseded by the M5628 isolated charger.
• M3545 Line Regen Line regeneration unit for AC drives under 15A at 230-480 VAC, converting excess braking energy back to the power line.
• M3645 Line Regen Line regeneration unit for AC drives over 15A at 230-600 VAC, handling higher power regenerative braking applications.
• M3500DB Permanent Magnet Servo Motor Brake Dynamic safety brake for permanent magnet servo motors, providing controlled deceleration and overvoltage protection.
• Case Resistors IP66-rated enclosed braking resistors for dissipating regenerative energy from AC drives.
• M3575R Braking Resistor Braking resistor rated under 30A with 6-20% duty cycle for dissipating regenerative energy from AC drives.
• M3775R Braking Resistor High-current braking resistor rated up to 1600A with 10-100% duty cycle for heavy-duty AC drive applications.
• M3675T Braking Transistor Compact braking transistor rated under 10A at 20% duty cycle for lite-duty AC drive braking applications.
• M3575T Braking Transistor Medium-duty braking transistor rated under 600A at 20% duty cycle for AC drive systems.
• M3452 Heavy Duty Braking Transistor Heavy-duty braking transistor rated up to 1600A with 50-100% duty cycle for demanding AC drive applications.
• M3452 Complete Braking Kit Complete braking kit combining the M3452 transistor with a matching resistor for turnkey AC drive installation.
• M3712 Single Phase Power Supply Single-phase power supply for common bus DC applications in AC drive systems.
• M3713 3-Phase Power Supply Three-phase power supply for common bus configurations supporting 208-600VAC input ranges.
• M3545P Regenerative DC Bus Power Supply Regenerative DC bus power supply under 15A at 230-480 VAC, providing power factor correction and energy regeneration.
• M7009R&C 24V Buffer Module 24VDC buffered power module providing temporary backup power for control circuits during power interruptions.
• M5212 Low Harmonic Single Phase Power Supply Single-phase power supply with low harmonic distortion for sensitive AC drive applications.
• M3484 Line Noise Filter Line noise filter for suppressing electromagnetic interference in AC drive installations.
• M3628UMT Ultracapacitor Module Tester Test equipment for validating ultracapacitor module performance and capacity for industrial maintenance applications.
• M3628ACF Automatic Capacitor Former Automatic electrolytic capacitor forming and testing equipment for aging and conditioning capacitors in industrial maintenance.
• M3628PUD Portable Ultracapacitor Discharger Portable discharge tool for safely removing stored energy from ultracapacitor modules in field service applications.
• M3660REM Regenerative Energy Monitor Monitoring device for measuring and analyzing regenerative energy in AC drive systems for industrial maintenance use.
• BSP Safety Power Isolation Switch Safety-rated power isolation switch for compliant lockout/tagout procedures during industrial maintenance.

Quantifiable outcome

• Over 95% of customer requests handled by customer support team without escalation
• +1 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Rockwell AutomationcoreTechnology or IntegrationBonitron is a Bronze Technology Partner of Rockwell Automation. The partnership focuses on providing solutions for Allen-Bradley (AB) drives and other Rockwell Automation motor control products. Bonitron provides compatibility information and solutions specifically designed for Rockwell drives.
• EASA (Electrical Apparatus Service Association)minorGTM or Marketing PartnerBonitron maintains membership in EASA, an industry association for electrical apparatus service companies. EASA provides marketing support and industry recognition for members.
• ABBcoreTechnology or IntegrationBonitron provides drive solutions specifically designed and tested for ABB drives. The partnership includes dedicated product pages and compatibility documentation for ABB drive users.
• Schneider ElectriccoreTechnology or IntegrationBonitron offers solutions compatible with Schneider Electric drives, with dedicated sections on their website and product documentation for Schneider applications.
• Mitsubishi ElectriccoreTechnology or IntegrationBonitron provides drive solutions for Mitsubishi Electric drives, including dedicated compatibility information and application notes.
• YaskawacoreTechnology or IntegrationBonitron offers solutions designed for Yaskawa drives with dedicated product pages and application support for Yaskawa motor control systems.
• Drive Manufacturer PartnerscoreTechnology or IntegrationAdditional drive manufacturer partnerships include: Baldor, Danfoss, Delta, Eaton/Cutler Hammer, Fuji, Hitachi, Lenze AC Tech, LSIS USA Inc., Nidec, Parker Hannifin, Siemens, TECO/Westinghouse, and Vacon. Bonitron provides dedicated solutions and compatibility documentation for each manufacturer's drives.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Yaskawa: Leading AC drive and motion control manufacturer (Yaskawa America) and Bonitron Core partner. Yaskawa-branded braking units and power supplies overlap Bonitron's overvoltage and power supply categories.
• Schneider Electric: Global drive and industrial automation supplier and Bonitron Core partner. Schneider offers drive peripherals (Altivar line) that compete directly with Bonitron's regen and undervoltage modules.
• Eaton: Industrial power management and drive manufacturer (Cutler-Hammer legacy) listed as a Bonitron Drive Manufacturer Partner. Eaton's drive accessories compete in similar AC drive channels.
• Siemens: Listed drive manufacturer partner (Sinamics platform) with extensive internal power electronics. Siemens competes with Bonitron across braking, power supplies, and ride-through categories.
• ABB: Global industrial drives and power electronics giant. ABB is one of Bonitron's Core technology partners and a competing supplier of regenerative braking and ride-through solutions for AC drives.
• Rockwell Automation: Major AC drive OEM (Allen-Bradley) and Bonitron Bronze Technology Partner. Rockwell sells its own power supplies and accessories that overlap with Bonitron's portfolio.
• Danfoss: AC drive OEM (including former Vacon) and Bonitron partner. Danfoss sells regenerative braking and harmonic mitigation products that overlap Bonitron's regen and power quality lines.
• Mitsubishi Electric: Drive OEM with broad industrial power electronics portfolio and Core partner to Bonitron. Mitsubishi offers internal regen and braking accessories that compete with Bonitron's product lines.

Direct peers

• Carlo Gavazzi: Industrial electronics manufacturer producing power supplies, soft starters, and motor control accessories for similar industrial customers. Comparable mid-sized niche positioning to Bonitron.
• Invertek Drives: Mid-sized VFD manufacturer focused on motor control solutions for industrial applications. A more directly comparable size and channel to Bonitron, with overlapping customer base in materials handling and HVAC.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCwIW0BAkE0WkXaD19t9dLmg
• LinkedInlinkedin.com/company/bonitron
• Xx.com/Bonitron_Inc
• Facebookfacebook.com/BonitronInc

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles17 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Bonitron