{"product_id":"150-c85nbr-new-sealed-ab-plc-150c85nbr-smart-motor-controller","title":"150-C85NBR New Sealed PLC 150C85NBR Smart Motor Controller","description":"\u003ch2 id=\"p2\"\u003e150-C85NBR — SMC-3 Soft Starter, 85A, 200–480V AC, with Internal Bypass\u003c\/h2\u003e\n\u003cp\u003eThe 150-C85NBR is an 85A soft starter from the SMC-3 series, covering motors up to approximately 45 kW at 480V AC. It controls the voltage applied to the motor during starting, limiting inrush current and reducing mechanical shock on startup. The \"R\" suffix denotes an internal bypass contactor — once the motor reaches full speed, the bypass closes and routes current around the SCR power stage, eliminating the continuous power dissipation that would otherwise occur through the semiconductors at full load.\u003c\/p\u003e\n\u003cp\u003eAt 85A, this is a mid-range device in the SMC-3 family, suited to pumps, fans, compressors, and conveyor drives in the 22–45 kW range. The application range is broad: anywhere that a direct-on-line starter causes problems — tripped upstream breakers from inrush, belt slip on start, pipe hammer in pump systems — the 150-C85NBR provides a clean alternative without the cost or complexity of a full variable-frequency drive.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e150-C85NBR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSMC-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Current\u003c\/td\u003e\n\u003ctd\u003e85 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e200–480V AC, Three-Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e100–240V AC (separate terminal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Power (approx. @ 480V)\u003c\/td\u003e\n\u003ctd\u003eUp to 45 kW \/ 60 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStarting Mode\u003c\/td\u003e\n\u003ctd\u003eVoltage ramp (soft start)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoft Stop\u003c\/td\u003e\n\u003ctd\u003eYes (programmable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Bypass\u003c\/td\u003e\n\u003ctd\u003eYes (closes at full speed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart Ramp Time\u003c\/td\u003e\n\u003ctd\u003e1–30 seconds (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInitial Torque Setting\u003c\/td\u003e\n\u003ctd\u003eAdjustable (potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFault Output\u003c\/td\u003e\n\u003ctd\u003e1 × relay, Form A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003ePhase loss, overtemperature (device only — no motor overload)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eIP20 \/ Open Type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e−10°C to 40°C (derate above 40°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards\u003c\/td\u003e\n\u003ctd\u003eIEC 60947-4-2, UL 508, CE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSizing the Soft Starter\u003c\/h3\u003e\n\u003cp\u003eThe 85A rating applies to normal duty starting — a motor accelerating a standard centrifugal load (pump, fan) within the default ramp time. Applications that demand more from the starter require derating:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty loads\u003c\/strong\u003e (crushers, compressors, high-inertia loads) that require extended ramp times beyond 10–15 seconds generate more heat in the SCRs during starting. Consult the derating curves for start times above 15 seconds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh ambient temperature\u003c\/strong\u003e: rated at 40°C; above this, output current must be reduced — typically 1.5–2% per degree above 40°C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequent starts\u003c\/strong\u003e: every start heats the SCRs. Duty cycle matters — applications with more than 5–6 starts per hour need a derating check against the thermal model.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor service factor\u003c\/strong\u003e: if the motor is continuously loaded above its nameplate rating (i.e., running with a service factor \u0026gt; 1.0), size the soft starter for the actual running current, not the nameplate current.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp class=\"faq-q\"\u003e\u003cstrong\u003eQ: Can the soft starter be used in-line (series) with the motor, or does it need to be wired in a bypass circuit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eThe 150-C85NBR is wired in-line (series) with the motor — it's the standard connection method. The internal bypass is inside the unit; no external bypass contactor is needed. The device handles the bypass automatically once full speed is reached.\u003c\/p\u003e\n\u003cp class=\"faq-q\"\u003e\u003cstrong\u003eQ: What is the difference between soft start and a variable-frequency drive for pump applications?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA soft starter controls motor voltage during start and stop only — at full speed, the motor runs directly on the supply frequency. A VFD controls speed continuously throughout operation. If the application only needs reduced inrush and soft stop with no speed variation during normal operation, a soft starter is simpler and less expensive. If variable speed during operation is required, a VFD is necessary.\u003c\/p\u003e\n\u003cp class=\"faq-q\"\u003e\u003cstrong\u003eQ: How is the ramp time adjusted?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eRamp time is set via a potentiometer on the front of the unit — no software required. Adjust, run a test start, observe the acceleration profile, and fine-tune. For the initial setting, start with 5–10 seconds and adjust based on how the load responds.\u003c\/p\u003e\n\u003cp class=\"faq-q\"\u003e\u003cstrong\u003eQ: Can this unit handle a motor with a higher service factor than 1.0?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eThe soft starter must be sized for the actual running current, including service factor. If a motor's nameplate is 75A but it runs continuously at 85A due to a 1.15 SF application, size the starter for 85A — which would put it at the limit of this unit. Sizing for the actual load current, not just the nameplate, is the correct approach.\u003c\/p\u003e\n\u003cp class=\"faq-q\"\u003e\u003cstrong\u003eQ: Is the fault relay normally energized or normally de-energized?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eThe fault relay is Form A (normally open). It closes on fault — energizing only when the device detects a fault condition. Wire the NC side of an interposing relay if a normally-closed fault signal is needed in the control circuit.\u003c\/p\u003e","brand":"topsdevice","offers":[{"title":"Default Title","offer_id":42732915294269,"sku":null,"price":922.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/6516\/8701\/files\/150-C85NBR_26_0bafcfda-9805-4683-abe3-724859178302.jpg?v=1769390777","url":"https:\/\/topsdevice.com\/products\/150-c85nbr-new-sealed-ab-plc-150c85nbr-smart-motor-controller","provider":"topsdevice","version":"1.0","type":"link"}