Newtons4th
Newtons4th Ltd is a private UK precision test and measurement manufacturer specializing in power and frequency analyzers for IEC compliance testing, serving electronics manufacturers, test labs, and R&D organizations. Production concluded in 2026; the firm now supports an installed base via calibration and technical services.
- Company typePrivate
- Founded2010
- HeadquartersLeicester, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Newtons4th does
Newtons4th Ltd is a UK-based precision test and measurement instrumentation company headquartered at 1 Bede Island Road, Leicester. Founded in 2010 (per company filings; firmographic data references 1997 as an associated date) and operating as a private limited company, the firm specialized exclusively in power and frequency measurement instruments, organized around the PPA power analyzer series, PSM power quality analyzer series, SFRA sweep frequency response analyzer, SLM sound level meter, N4A AC/DC power sources, and supporting accessories such as IMP impedance networks, LPA lab amplifiers, and ACD dip simulators. The product portfolio was tightly coupled to international compliance testing under IEC 61000-3-2, 61000-3-3, 61000-3-11, 62301, EN50564, and IEC 60076-18, with TUV certification supporting regulatory credibility. A companion software suite (IECSoft, PSMComm2, SFRAComm2, PPA Datalogger, StandbyPower, PLComm, and CommView2 firmware manager) enabled automated compliance reporting, data logging, and instrument communications. Primary customers were electrical and electronics manufacturers, test and measurement laboratories, and R&D organizations needing precision power quality, harmonic, flicker, standby-power, and transformer frequency response analysis.
The business model combined hardware sales with aftermarket professional services. Instruments were sold direct-to-customer from Leicester via the company website and a global direct-sales motion, priced in GBP at unit prices ranging from roughly £2,000 to £16,000, complemented by accessories at £125–£1,750. Recurring revenue came from calibration services and technical support for an installed base of existing units. Distribution was direct-only, with no disclosed channel partners, resellers, or institutional investors, consistent with a founder-controlled specialist of 11–50 employees.
As of 2026, the company has concluded production of all instruments and is operating in a wind-down posture. A final build of instruments and accessories is being liquidated at discounts of 50% to 75% off original list prices. Newtons4th continues to operate to serve existing customers with RMA handling, calibration, and technical assistance, but no new product launches, geographic expansions, funding events, or M&A activity are signaled in the available data.
Newtons4th firmographics
Firmographics- Name
- Newtons4th
- Legal name
- Newtons4th Ltd
- Website
- https://newtons4th.com
- Company type
- Private
- Founded year
- 2010
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Newtons4th Ltd is a private UK precision test and measurement manufacturer specializing in power and frequency analyzers for IEC compliance testing, serving electronics manufacturers, test labs, and R&D organizations. Production concluded in 2026; the firm now supports an installed base via calibration and technical services.
- Ownership category
- akta.pro rank
Newtons4th industry classification
Industry- Product category
- Precision Test and Measurement Instruments
- NAICS
- Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Other Measuring and Controlling Device Manufacturing (334519)
- SIC
- Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823)
- akta.pro primary industry
- Power Quality, Metering & Monitoring (HDACAJAG)
- akta.pro secondary industries
- Metrology, Calibration & Testing Equipment (Balances, pH/DO, Standards) (HLAGAIAL), Process Automation Instrumentation & Control (DCS, Valves, Actuators, Analyzers) (IMAHAHAM)
Keywords
Where Newtons4th is headquartered
LocationHeadquarters
- HQ city
- Leicester
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Newtons4th business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- Instrument Sales: Sale of precision test and measurement instruments including power analyzers, frequency analyzers, power sources, and accessories. The company has concluded production but has final stock available for immediate purchase.
- Calibration Services: Ongoing calibration services for existing customers with current units.
- Technical Support: Technical assistance provided to existing customers for current units.
- Accessory Sales: Sale of accessories including shunts, interfaces, breakout boxes, burden resistors, transformers, and attenuators.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | PPA Power Analyzers - Final Stock |
| One time/ perpetual license | Pay-as-you-go | IMP Impedance Networks - Final Stock |
| One time/ perpetual license | Pay-as-you-go | Lab Amplifiers - Final Stock |
| One time/ perpetual license | Pay-as-you-go | DIP Simulators - Final Stock |
| Unit Pricing | Pay-as-you-go | Accessories - Final Stock |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
Newtons4th product offering
Product offeringCore offering
Newtons4th designs, manufactures, and sells precision electrical power and frequency measurement instruments — including PPA power analyzers, PSM power quality analyzers, SFRA sweep frequency response analyzers, N4A AC/DC power sources, IMP impedance networks, LPA laboratory amplifiers, ACD dip simulators, and SLM sound level meters — together with a supporting range of accessories such as high-frequency current shunts, interface modules, breakout boxes, burden resistors, injection transformers, PIM power immunity modules, voltage attenuators, and battery simulators. The company has concluded production and is selling its final build of instruments and accessories, while continuing to provide calibration services, technical support, and complementary PC software (IECSoft, PSMComm2, SFRAComm2, PPA Datalogger, StandbyPower, PLComm, CommView2) to existing customers.
Product overview
Newtons4th is a precision test and measurement instrumentation company that has concluded production of its product line. The company offers a portfolio of power analyzers (PPA series), power quality analyzers (PSM series), and specialty instruments (SFRA45, SLM3505, N4A power sources, ACD dip simulators), supplemented by a comprehensive range of current shunts, interfaces, injection transformers, and impedance/immunity accessories. Supporting software includes IECSoft for IEC 61000 harmonics and flicker compliance testing, PSMComm2/SFRAComm2 for frequency response analysis, PPA Datalogger, StandbyPower, PLComm, and CommView2 for firmware management. The PPA and PSM hardware series form the core of the offering, with accessories expanding measurement capability and software enabling compliance reporting and data analysis.
Differentiator
Problem solved
Functional benefit
Products and services
- PPA Precision Power Analyzers (PPA500, PPA1500, PPA25/26xx, PPA3500, PPA45xx, PPA5500, PPA55xx series) High-precision AC/DC power analyzers for measuring power, efficiency, harmonics, and flicker in applications including PWM motor drives, AC/DC converters, and standby power per EN50564/IEC62301, designed for electrical and electronics manufacturers and test laboratories.
- PSM Power Quality Analyzers (PSM1700, PSM1735, PSM2200, PSM3750) Power quality analyzers for harmonics, flicker, and comprehensive power quality compliance testing per IEC 61000-3-2 and related standards, used by test laboratories and manufacturers performing regulatory compliance analysis.
- SFRA45 Sweep Frequency Response Analyzer Sweep frequency response analyzer for transformer winding and core mechanical defect detection per IEC 60076-18, used by power utilities, transformer manufacturers, and test laboratories performing diagnostic assessments.
- SLM3505 Sound Level Meter Sound level meter with PC software (PLComm) for acoustic noise data logging and analysis, used by acoustic testing teams and environmental compliance assessors.
- N4A AC+DC Power Source Programmable AC and DC power source instrument providing controllable single- and three-phase power output for testing electronic equipment, available in multiple power ratings, used by test laboratories and manufacturers.
- IMP163 Impedance Network Impedance network accessory used with N4L instruments for IEC 61000-3-3 and IEC 61000-3-11 flicker and voltage fluctuation compliance testing, sold as a standalone SKU.
- LPA01 and LPA05A Laboratory Power Amplifiers High-precision AC/DC laboratory power amplifiers for test and measurement applications requiring precision power amplification, sold as standalone products.
- ACD-230-20-1 Dip Simulator Voltage dip and short interruption simulator for immunity testing of electrical equipment per IEC 61000-4-11, sold as a standalone instrument.
- Instrument Accessories (LEM-1 Interface, HF Current Shunts HF01A/HF003/HF006/HF020, GPIB515, Universal Breakout Box, IAI/IAI2, Injection Transformers, PIM10/PIM30, ATT10, BDR01 Burden Resistor, BATT470 Battery Simulator, 3-Phase Voltage Interface, Torque & Speed Ground Module/Isolator, LFIM) Standalone accessory products sold individually to expand instrument functionality, including LEM-1 interfaces for external current shunts/transducers, high-frequency current shunts, GPIB communications interfaces, universal breakout boxes, IAI/IAI2 impedance analysis interfaces, injection transformers (Standard/High Frequency/High Voltage), PIM10/PIM30 power immunity modules, ATT10 voltage attenuator, BDR01 burden resistor, BATT470 battery simulator, 3-Phase Voltage Interface, Torque & Speed Ground Module and Isolator, and LFIM.
- Companion Software (IECSoft, PSMComm2, SFRAComm2, PPA Datalogger, StandbyPower, PPALoG/n4ldlog, PLComm, CommView2) PC applications distributed alongside instruments to enable IEC 61000 harmonics and flicker compliance testing (IECSoft), frequency response analysis on PSM instruments (PSMComm2), SFRA analysis per IEC 60076-18 (SFRAComm2), power measurement data logging (PPA Datalogger), standby power analysis per EN50564/IEC62301 (StandbyPower), PPA log file conversion (PPALoG/n4ldlog), SLM3505 data management (PLComm), and firmware uploads plus command-line instrument communications (CommView2).
- Calibration and Technical Support Services Recurring post-sale calibration services and ongoing technical assistance provided by Newtons4th to existing customers with current units, supporting instrument accuracy and compliance over the product lifecycle.
Quantifiable outcome
- IEC 61000-3-2 compliance testing capability
- +3 more outcomes
Companies that use Newtons4th
Customer profileSegments3 records
Ideal customer profiles3 records
Newtons4th technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
Newtons4th partnerships and signals
Strategic signalScale indicators2 records
Recent moves5 records
Expansion highlights3 records
Newtons4th competitors and assessment
Company assessmentBroad incumbents
- Tektronix: Tektronix's PA1000, PA3000, and PA4000 power analyzers compete in the precision power measurement market served by N4L, while Tek's broader oscilloscope and T&M portfolio makes it a broad incumbent.
- Fluke: Fluke's 434/435/437 Series II Power Quality Analyzers and Norma series power analyzers compete in the same power quality and precision power space as N4L, with much broader T&M portfolio reach across field and lab.
- Rohde & Schwarz: R&S's HMC8015 power analyzer and NGL/NGM power supplies serve the precision power measurement market that N4L targets, though R&S's portfolio spans much broader test & measurement categories.
- Keysight Technologies: Keysight's AC6800/AC6900 series AC sources and broader power test portfolio overlap N4L's N4A power sources and adjacent measurement products as part of a much wider T&M portfolio.
Direct peers
- Kikusui Electronics: Kikusui's PCR-W/W2 series AC power supplies and PAX/PAM power meters compete in the same precision power source and measurement category as N4L's N4A and PPA products.
- AMETEK Programmable Power: AMETEK's California Instruments MX/RS series and Elgar smart AC/DC sources compete directly with N4L's N4A power sources for compliance and product test applications.
- Chroma ATE: Chroma's 66200 series AC/DC power sources and 6630 series power analyzers directly overlap N4L's N4A power sources and PPA analyzers for compliance and converter/inverter test applications.
- Hioki: Hioki's PW3198 power quality analyzer and PW6001 precision power meter compete head-to-head with N4L's PSM and PPA series for IEC 61000-3-2 compliance and motor/inverter efficiency testing.
- Yokogawa Test & Measurement: Yokogawa's WT series (WT1800, WT3000/WT3000E) are the most direct competitors to Newtons4th's PPA power analyzers, serving identical precision AC/DC power, harmonics, and efficiency measurement use cases in compliance and R&D labs worldwide.
Emerging players
- Vitrek: Vitrek's V7x series high-accuracy power analyzers target the same precision AC/DC power measurement niche as N4L's PPA series, particularly for compliance and audio/power conversion test.
Market position
Strengths3 records
Weaknesses4 records
Competitive moat3 records
Key risks5 records
Key highlights5 records
Customer concentration
Newtons4th social profiles
Digital presenceNewtons4th financial estimates
Financial estimateRevenue estimate
Valuation estimate
Newtons4th leadership team
Management profileNumber of profiles
Profiles1 record
Newtons4th funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Newtons4th M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Newtons4th
What does Newtons4th do?
Newtons4th designs, manufactures, and sells precision electrical power and frequency measurement instruments — including PPA power analyzers, PSM power quality analyzers, SFRA sweep frequency response analyzers, N4A AC/DC power sources, IMP impedance networks, LPA laboratory amplifiers, ACD dip simulators, and SLM sound level meters — together with a supporting range of accessories such as high-frequency current shunts, interface modules, breakout boxes, burden resistors, injection transformers, PIM power immunity modules, voltage attenuators, and battery simulators. The company has concluded production and is selling its final build of instruments and accessories, while continuing to provide calibration services, technical support, and complementary PC software (IECSoft, PSMComm2, SFRAComm2, PPA Datalogger, StandbyPower, PLComm, CommView2) to existing customers.
Is Newtons4th a public or private company?
Newtons4th is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Newtons4th founded?
Newtons4th was founded in 2010. It employs 11 to 50 people.
Where is Newtons4th based?
Newtons4th is headquartered in Leicester, United Kingdom, in the Europe region.
How does Newtons4th make money?
Four revenue lines are on record. Instrument Sales are the primary driver. The others are calibration Services, technical Support and accessory Sales.
Who are Newtons4th's main competitors?
Broad incumbents on record are Tektronix, Fluke, Rohde & Schwarz and Keysight Technologies. Direct peers are Kikusui Electronics, AMETEK Programmable Power, Chroma ATE, Hioki and Yokogawa Test & Measurement. Vitrek is listed as an emerging player.
Does Newtons4th have an API?
No public API is recorded for Newtons4th.
What industry is Newtons4th in?
Newtons4th's product category is Precision Test and Measurement Instruments. Its primary akta.pro industry code is HDACAJAG, Power Quality, Metering & Monitoring, with a secondary code of HLAGAIAL, Metrology, Calibration & Testing Equipment (Balances, pH/DO, Standards). Its NAICS code is 334515 and its SIC code is 3825.