Over Currant Overload 2.5A BC61

Description

2.5A Adjustable Thermal Overload Relay (Motor Protection Switch)Safeguard your electric motors from costly burnouts with this premium Adjustable Thermal Overload Relay. Engineered specifically to detect sustained overcurrent conditions and phase failures, this protective device monitors the current draw of your machinery. If the current exceeds the safe threshold (adjustable up to 2.5A), the internal bimetallic strips heat up and trip the circuit, cutting power before insulation damage or motor failure can occur.Equipped with a clear manual adjustment dial, a red STOP button, a blue RESET button (with selectable manual or automatic reset modes), and a physical trip indicator window, it provides total control over your motor-starting safety layouts.Key FeaturesAdjustable Current Range: Features a calibrated dial centered around 2.5A (typically covering a protective band such as $1.6text{A}text{–}2.5text{A}$ or $2.5text{A}text{–}4text{A}$) to precisely match your motor’s Full Load Amperage (FLA).Phase Failure Protection: Differential mechanism trips the relay rapidly if one phase drops out in a three-phase system, preventing catastrophic motor overheating.Auxiliary Contacts: Built-in 1NO (Normally Open) + 1NC (Normally Closed) isolated signaling contacts to safely cut the main contactor coil power and simultaneously trigger a fault light.Flexible Reset Options: Easily toggle between manual reset (requires a technician to press the blue button after a fault) or automatic reset for remote installations.Technical Specifications & Family VariationsElectrical RatingsInsulation Voltage ($U_i$): Rated for systems up to $690text{V AC}$Trip Class: Class 10A (trips within 2 to 10 seconds at 6 times the rated current setting, allowing for standard motor startup inrush current).Compatible Model & Frame VariationsThermal overload relays are built around standardized physical frame sizes that mount directly into corresponding magnetic contactors:Miniature Frame Size (e.g., NRE8-25 / JR28-25): The standard compact physical chassis that houses lower-amperage heating elements ranging from $0.1text{A}$ up to $25text{A}$.Higher Current Variants: Identical operational logic but built into larger physical frames (e.g., up to $100text{A}$ or $630text{A}$) for heavy industrial manufacturing plants.Product & System CompatibilityThis thermal overload relay acts as a downstream protective element and is highly compatible across standard industrial switchgear ecosystems:Magnetic AC Contactors: Designed to plug directly into the load-side terminals of matching AC Contactors (universally compatible with matching frame series like the NC1, CJX2, or LC1D blocks) to form a complete Magnetic Motor Starter.Electric Motors: Optimally compatible with small Three-Phase or Single-Phase AC Motors (such as industrial exhaust fans, small water pumps, conveyor rollers, and cooling compressors) whose running current falls within the 2.5A dial threshold.Mounting Brackets: Can be paired with an independent Base Mounting Bracket (DIN rail adapter structure) if you prefer to mount the relay separately on a standard $35text{mm}$ DIN rail rather than plugging it directly underneath a contactor.Panel Components: Wire terminals connect seamlessly to standard 22mm indicator lights (to flash a red “Fault” signal when tripped) and emergency stop loops.