{"product_id":"mr-j3-30b-mitsubishi-servo-amplifier-built-in-brake","title":"MR-J3-30B Mitsubishi Servo Amplifier | Built-in Brake","description":"\u003ch2\u003e\u003cstrong\u003eMitsubishi MR-J3-30B Versatile Servo Amplifier: 300W of Reliable Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eMitsubishi MR-J3-30B\u003c\/strong\u003e is a flexible and compact 300-watt servo amplifier from the trusted MELSERVO J3 series. Designed for simplicity and efficiency, it operates on both single and three-phase power (200-230VAC) and features a built-in dynamic brake. Its self-cooling, open-type design makes it an excellent choice for a wide range of mid-range automation applications where space and reliable performance are key.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eComplete Product Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \u0026amp; Series:\u003c\/strong\u003e Mitsubishi MELSERVO MR-J3 Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e MR-J3-30B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier Type:\u003c\/strong\u003e General-Purpose AC Servo Amplifier\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey Feature:\u003c\/strong\u003e Flexible 1\/3-phase input with integrated dynamic brake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCore Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Output Power:\u003c\/strong\u003e 300 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 200 to 230 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Phase:\u003c\/strong\u003e 1-Phase or 3-Phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePermissible Voltage Range:\u003c\/strong\u003e 170 to 253 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Frequency:\u003c\/strong\u003e 50\/60 Hz (±5% fluctuation allowed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Interface Power:\u003c\/strong\u003e 24 VDC, 150 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Method:\u003c\/strong\u003e Sine Wave PWM \u0026amp; Current Control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBraking:\u003c\/strong\u003e Built-in Dynamic Brake\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling Method:\u003c\/strong\u003e Self-Cooling (Natural Convection)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Rating:\u003c\/strong\u003e IP00 (Open Chassis)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to 55°C (non-freezing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -20°C to 65°C (non-freezing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInrush Current:\u003c\/strong\u003e 30 A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Power Input:\u003c\/strong\u003e Can be wired for either single-phase or three-phase power, simplifying inventory and installation in varied electrical environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Braking:\u003c\/strong\u003e The built-in dynamic brake handles common deceleration energy, eliminating the need for an external brake resistor in many applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Simple Cooling:\u003c\/strong\u003e Self-cooling design reduces size, noise, and maintenance by eliminating internal fans.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Tolerance:\u003c\/strong\u003e Stable operation from 170V to 253VAC accommodates voltage sags and surges common in industrial settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProven Control Technology:\u003c\/strong\u003e Utilizes Mitsubishi's precise sine wave PWM and current control for smooth, responsive motor performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis amplifier is well-suited for a broad spectrum of automation tasks:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePackaging machinery\u003c\/li\u003e\n\u003cli\u003eSmall conveyor systems\u003c\/li\u003e\n\u003cli\u003eRotary indexing tables\u003c\/li\u003e\n\u003cli\u003eTextile machines\u003c\/li\u003e\n\u003cli\u003ePrinting and labeling equipment\u003c\/li\u003e\n\u003cli\u003eSemiconductor handling units\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility \u0026amp; System Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eMR-J3-30B\u003c\/strong\u003e is designed to pair with 300W-rated Mitsubishi HC-KFS, HC-MFS, and HC-SFS series servo motors from the J3 family. It connects to controllers via standard pulse train input or can be integrated into larger systems using optional communication units. Like all IP00 devices, it must be installed inside a protective control cabinet.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOrdering \u0026amp; Service Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis product is sold as new and original, in factory packaging. It comes with a standard \u003cstrong\u003e12-month warranty\u003c\/strong\u003e. We ensure prompt worldwide delivery through our trusted partners: \u003cstrong\u003eFedEx, UPS, and DHL\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProfessional FAQs\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhen should I use single-phase vs. three-phase wiring for this drive?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse three-phase input whenever available, as it provides more balanced power and reduces load on the facility's single-phase circuits. Single-phase is suitable for smaller setups or where three-phase power is not accessible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the built-in brake resistor handle all braking needs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt handles normal, frequent deceleration. For applications with high inertia loads, very fast stop cycles, or vertical axes, you may still need to add an external brake resistor to prevent overload faults.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the 24VDC control power used for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt powers the drive's logic circuits, I\/O, and communication interfaces. This must be supplied from a separate, stable 24VDC power source, not from the main AC power line.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this drive with a Mitsubishi PLC's built-in pulse output?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The \u003cstrong\u003eMR-J3-30B\u003c\/strong\u003e accepts standard pulse train signals (CW\/CCW or Pulse\/Direction), making it directly compatible with the pulse outputs from Mitsubishi FX or Q series PLCs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the 30A inrush current rating mean for my circuit breaker?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt means the drive draws a brief high current at power-on. Your branch circuit protection (breaker or fuse) must be sized to handle this surge without nuisance tripping, typically using a time-delay (slow-blow) fuse.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003e© 2025 Ubest Automation Limited. All rights reserved.\u003cbr\u003eOriginal Source: \u003ca href=\"https:\/\/www.ubestplc.com\/\"\u003ehttps:\/\/www.ubestplc.com\/\u003c\/a\u003e\u003cbr\u003eContact: \u003ca href=\"mailto:sales@ubestplc.com\"\u003esales@ubestplc.com\u003c\/a\u003e | Phone: \u003ca href=\"https:\/\/wa.me\/8618030005825\"\u003e+86 180 3000 5825\u003c\/a\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"Mitsubishi","offers":[{"title":"Default Title","offer_id":51492043882778,"sku":"MR-J3-30B","price":172.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/6240\/4634\/files\/MR-J3-30B_3.jpg?v=1766541151","url":"https:\/\/www.ubestplc.com\/products\/mr-j3-30b-mitsubishi-servo-amplifier-built-in-brake","provider":"Ubest Automation Limited","version":"1.0","type":"link"}