[{"id":35418275898,"handle":"ac-voltmeters","title":"AC Voltmeters","updated_at":"2026-06-01T19:01:01-04:00","body_html":"","published_at":"2018-04-16T10:50:27-04:00","sort_order":"best-selling","template_suffix":"individual-panel-meters","disjunctive":false,"rules":[{"column":"title","relation":"contains","condition":"AC Voltmeter"}],"published_scope":"web"},{"id":282127466693,"handle":"all","title":"All products","updated_at":"2026-07-30T07:06:05-04:00","body_html":"\u003ch4\u003e\u003ca href=\"\/collections\"\u003eshop products by category\u003c\/a\u003e\u003c\/h4\u003e","published_at":"2021-12-01T13:30:06-05:00","sort_order":"best-selling","template_suffix":"test-equipment","disjunctive":false,"rules":[{"column":"variant_price","relation":"greater_than","condition":"0.00"}],"published_scope":"web"},{"id":77794639930,"handle":"crompton","title":"Crompton","updated_at":"2026-07-10T07:09:13-04:00","body_html":"","published_at":"2018-08-09T08:46:01-04:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"crompton"}],"published_scope":"web"},{"id":270799896773,"handle":"meters","title":"Meters","updated_at":"2026-07-28T13:35:54-04:00","body_html":"","published_at":"2021-06-23T13:41:49-04:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"title","relation":"contains","condition":"meter"}],"published_scope":"web"},{"id":35205513274,"handle":"panel-meters","title":"Panel Meters","updated_at":"2026-07-10T07:09:13-04:00","body_html":"\u003ch4\u003e\u003c\/h4\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp style=\"text-align: left;\"\u003eUpgrade Your Panel with Byram's Metal Case Switchboard Meters\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eNot only are they a snap to install, the MCS\/TMCS switchboard meters are easy to read and built strong for safety. The metal case offers an additional grounding point and\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"st\"\u003eelectromagnetic\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"st\"\u003einterference\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e(EMI) shielding, while requiring no external power source.\u003c\/p\u003e\n\u003cp\u003eThe MCS\/TMCS switchboard meters are UL listed and comply with ANSI Standard C39.1. The MCS and TMCS meters have become the #1 go to for Switchgear manufactures, stand by generator companies, and service and maintenance companies. You too will find Byram's MCS\/TMCS switchboard meters are the go to switchboard meter for your application.\u003c\/p\u003e\n\u003cp\u003eCustom scaling, non-standard ranges, and color bands are available on all switchboard meters.\u003c\/p\u003e\n\u003ch4\u003eMCS: Pivot and Jewel\u003c\/h4\u003e\n\u003cp\u003eMovement is spring loaded and suspended between two sapphire jewels with hardened steel pivots. Based on meter design used for over 100 years.\u003c\/p\u003e\n\u003ch4\u003eTMCS: Taut-Band\u003c\/h4\u003e\n\u003cp\u003eThe MCS meters were created as a drop-in replacements for the then recently discontinued AB\/DB 40 Yokogawa switchboard meters. These drop-in replacements for Yokogawa switchboard meters feature a metal can that is made from drawn steel that is powder coated for long life. The MCS features a pivot and jewel movement making it an economical meter. \u003c\/p\u003e\n\u003cp\u003eIn 2021 Byram released the Taut-Band TMCS meter series. The Taut-Band movement offers greater accuracy, improved repeatability, and is able to endure shock. The movements are made with the original Yokogawa tooling making the TMCS the Gold Standard in analog metering. \u003c\/p\u003e\n\u003cp\u003eByram's TMCS meters meet the needs of the most demanding environment applications. All MCS and TMCS models are customizable to meet your requirements. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch6\u003eIf you have any questions or would like more information on Byram’s Metal Case Switchboard Meters, \u003ca href=\"https:\/\/shop.byramlabs.com\/pages\/contact-us\" title=\"reach out the industry experts at Byram Labs\"\u003ereach out to the industry experts at Byram Labs\u003c\/a\u003e today, we'd be happy to help!\u003c\/h6\u003e","published_at":"2018-04-13T13:40:22-04:00","sort_order":"best-selling","template_suffix":"main-panel-meters","disjunctive":true,"rules":[{"column":"tag","relation":"equals","condition":"switchboard meter"},{"column":"tag","relation":"equals","condition":"panel meter"},{"column":"title","relation":"contains","condition":"Elapsed Time Meter"}],"published_scope":"web"}]
Transformer-Rated 50/60Hz AC Voltmeter 0-300 Scale, 150 Volts
The Platinum Series of high quality Switchboard Instruments complies with the American ANSI-C39.1 accuracy class 1 specification. Available in the 4 1/2"case size, their rugged design characteristics meet the needs of the most demanding environment applications. Engineering know-how, based on time-proven designs and worldwide use, is built into every switchboard instrument. With Byram, you always get products with proven reliability and accuracy. Models are customizable to meet customers various requirements.
tmcs Analog Switchboard specifications
In accordance with ANSI C39.1Accuracy:±1.0% of full scale basic accuracy class.
Specific accuracies:Expanded Scale Voltmeter - 0.3% of mid-scale. Power Factor Meter meter - ±1% of fiducial value from 40-120% of rated current. Synchroscope Meter, Meter, - ±1% of scale length. Frequency Meters - ± .15Hz @45-55Hz and 55-65Hz, ±0.08Hz 58-62Hz, ±1.3Hz @350-450Hz.
Position of use:Vertical (scale)
Full scale deflection angle:250°, except Synchroscope Meter, Meter, is 360°
Full scale length:tmcs Analog - 6.9 inches.
Scale plate:tmcs Analog platform type 2 piece scale with graduations on the outer scale; numerals and legends on the inner scale.
Case:All tmcs Analog switchboard instruments have drawn steel case with matt black powder coating.
Cover:Front cover has bezel & window made by one piece of flame retardant Polycarbonate molding with black matte finished bezel area.
Mounting studs: 1/4" x 28 thread.
Terminal studs:10-32 thread.
Operating temperature range:0 to 40°C (32 to 104°F).
Storage temperature range:-10 to 50°C (14 to 122°F).
Extreme temperature range:-20°C to 65°C (-4 to 149°F).
Dielectric level:2300VAC for 1 minute between the electrical circuit and mounting studs.
Overload rating:AC & DC Ammeters – 1.2 x continuous, 10 x for 0.5 seconds, repeated 10 times with 1 minute interval. Ac & DC Voltmeters and Frequency Meters – 1.2 x continuous
