{"product_id":"square-d-rc3040m150sl-test-block-bypass-meter-sockets","title":"Square D - RC3040M150SL Test Block Bypass Meter Socket | 150A Ringless NEMA 3R","description":"\u003ch2\u003eSquare D RC3040M150SL — Test Block Bypass Single Meter Socket, 150A, NEMA 3R, Ringless\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSquare D RC3040M150SL\u003c\/strong\u003e is a \u003cstrong\u003e150-amp test block bypass meter socket\u003c\/strong\u003e featuring a ringless cover, NEMA 3R outdoor-rated enclosure, and 120\/240V single-phase, 3-wire configuration. Purpose-built for utility and commercial metering installations requiring safe meter bypass capability, this UL-listed unit is engineered for reliable long-term outdoor service.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RC3040M150SL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Square D \/ Schneider Electric\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Test Block Bypass Meter Socket\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 150 Amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120\/240 VAC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCircuit:\u003c\/strong\u003e 1-Phase, 3-Wire\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnclosure:\u003c\/strong\u003e NEMA 3R (Outdoor Rated)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCover Type:\u003c\/strong\u003e Ringless\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Surface Mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eListing:\u003c\/strong\u003e UL Approved\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe RC3040M150SL delivers the same trusted test block bypass platform as the RC3040M series at a \u003cstrong\u003e150-amp rating\u003c\/strong\u003e, making it the right choice for residential and light commercial service entrances where bypass metering is a utility requirement but full 200A capacity isn't needed.\u003c\/p\u003e\n\n\u003cp\u003eThe integrated test block allows utility crews to safely test, calibrate, or replace the revenue meter without interrupting electrical service — a critical capability for utilities committed to uptime and customer satisfaction. The ringless cover ensures tamper-resistant meter access and is accepted by major utilities across North America. NEMA 3R construction makes the RC3040M150SL weather-resistant and reliable in outdoor environments year-round.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the Square D RC3040M150SL?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eTest block bypass allows live meter replacement without service interruption\u003c\/li\u003e\n  \u003cli\u003e150A rating optimized for residential and light commercial service entrances\u003c\/li\u003e\n  \u003cli\u003eRingless cover — tamper-resistant and widely utility-accepted\u003c\/li\u003e\n  \u003cli\u003eNEMA 3R outdoor enclosure withstands rain, sleet, and ice\u003c\/li\u003e\n  \u003cli\u003eUL listed for NEC-compliant installation\u003c\/li\u003e\n  \u003cli\u003eSurface mount design for straightforward field installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Compares: RC3040M150SL vs RC3040M200SL\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRC3040M150SL:\u003c\/strong\u003e 150A — Residential and light commercial service entrances\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRC3040M200SL:\u003c\/strong\u003e 200A — Larger residential and small commercial applications\u003c\/li\u003e\n  \u003cli\u003eBoth feature ringless covers, NEMA 3R enclosures, test block bypass, and UL listing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eResidential service entrances with utility bypass requirements\u003c\/li\u003e\n  \u003cli\u003eLight commercial metering installations\u003c\/li\u003e\n  \u003cli\u003eUtility infrastructure upgrades requiring test block access\u003c\/li\u003e\n  \u003cli\u003eMunicipal and cooperative utility metering programs\u003c\/li\u003e\n  \u003cli\u003eNew construction where utility-specified bypass sockets are required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is a test block bypass meter socket?\u003c\/strong\u003e\u003cbr\u003eA test block bypass meter socket integrates a switching mechanism that allows a utility technician to safely bypass the revenue meter during testing, calibration, or replacement — without cutting power to the customer. This is required by many utilities to enable safe meter maintenance on live circuits.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the RC3040M150SL and RC3040M200SL?\u003c\/strong\u003e\u003cbr\u003eThe primary difference is amperage: the RC3040M150SL is rated at 150 amps, while the RC3040M200SL is rated at 200 amps. Both share the same ringless design, NEMA 3R enclosure, test block bypass functionality, and UL listing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does \"ringless\" mean on a meter socket?\u003c\/strong\u003e\u003cbr\u003eA ringless meter socket uses an integrated cover latch rather than a separate locking ring to secure the utility meter. This design is preferred by many utilities for its tamper-resistance and simpler field operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the RC3040M150SL available new or used?\u003c\/strong\u003e\u003cbr\u003eThe RC3040M150SL is available in both New and Used condition. Contact us to confirm current stock and pricing for each condition.\u003c\/p\u003e","brand":"Square D \/ Schneider Electric","offers":[{"title":"New","offer_id":48395850580216,"sku":"RC3040M150SL-N","price":4900.0,"currency_code":"USD","in_stock":true},{"title":"Used","offer_id":48395850612984,"sku":"RC3040M150SL-U","price":4900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/1209\/3176\/files\/RC3040M150SL.png?v=1779907665","url":"https:\/\/alphabreakersandcontrols.com\/products\/square-d-rc3040m150sl-test-block-bypass-meter-sockets","provider":"Alpha Breakers \u0026 Controls","version":"1.0","type":"link"}