In Stock
1489-M1C040 A-B Miniature Circuit Breaker
$ 95.67
- Free Delivery Over $30 All Products
- 30 days easy returns if you change your mind
- Order before noon for same day dispatch
Guaranteed Safe Checkout
- Description 1489-M1C040 A-B Miniature Circuit Breaker Product Dimensions： Product Description (Detailed Explanation) The 1489-M1C040 is a 1-Pole, 4 Ampere circuit breaker featuring a Type C trip characteristic. Unlike standard supplementary protectors, the 1489-M series carries a UL 489 listing, which means it is approved for use as a primary “branch circuit” protection device. It provides both thermal and magnetic tripping mechanisms: the thermal element protects against long-term overloads, while the magnetic element provides instantaneous protection against high-level short circuits. Its compact 17.5mm width per pole makes it an efficient solution for high-density DIN rail installations. Product Parameters (Technical Specifications) Parameter Category Specification Number of Poles 1-Pole Rated Current ($I_n$) 4 Amperes Trip Curve Type C (5 to 10 times $I_n$) Rated Voltage 277V AC / 48V DC (Single Pole) Interrupting Capacity 10 kA (UL/CSA) / 15 kA (IEC) Mechanical Life 20,000 Operations Mounting Type 35mm DIN Rail Terminal Type Dual terminal (allows bus bar and wire connection) Wire Gauge 18…4 AWG (1.0…25 $mm^2$) Standards UL 489, CSA C22.2 No. 5, IEC/EN 60947-2, CE Product Advantages (Key Benefits) UL 489 Listed: Approved for branch circuit protection, eliminating the need for additional upstream fuses in many applications. Type C Curve Performance: Ideal for circuits with moderate inductive loads (like small motors, fans, or control transformers) where nuisance tripping might occur with a Type B breaker. Dual Terminals: Features “box” style terminals that allow the user to connect both a standard wire and a bus bar simultaneously, simplifying panel wiring. Current Limiting Design: High energy-limiting capabilities provide superior protection for downstream components during a short-circuit event. Visual Trip Indicator: Includes a clear window showing red for “ON/Tripped” and green for “OFF,” allowing for rapid status identification from outside the panel. Precautions (Important Notes) Trip Curve Selection: Ensure a Type C curve is appropriate for your load. For high-inrush loads (like large transformers), a Type D might be required; for purely resistive loads, a Type B might be more sensitive. AC vs. DC Rating: While rated for 48V DC, ensure you do not exceed the voltage limit. For higher DC voltages, poles must be connected in series according to manufacturer diagrams. Torque Requirements: Use a calibrated torque screwdriver to tighten terminals to the specified value (approx. 2.8 N·m). Loose connections are a leading cause of overheating and premature failure. Ambient Temperature: Circuit breakers are calibrated at 40°C. If installed in a very hot or very cold enclosure, the tripping threshold must be derated according to the manufacturer’s temperature charts. Product Applications (Typical Use Cases) Control Transformers: Protecting the primary or secondary side of control power transformers in automation cabinets. Solenoids and Valves: Providing dedicated protection for pneumatic or hydraulic solenoid banks. PLC I/O Protection: Guarding sensitive digital or analog output modules from field-side short circuits. Industrial Lighting: Managing branch circuits for internal enclosure lighting or small external task lights. Small Motors: Protecting fractional horsepower AC motors in fans, small pumps, or conveyor auxiliary drives. Shipping Port: Xiamen, China Payment: Bank of Chicago, Bank of Singapore Express cooperation: fedex, DHL, UPS and your express account Service: Professional Sales provides 24 hours /7 days online service Please make an inquiry for more models： AB 1756-0B16E AB 1756-DMD30 AB 1756-IB32 AB 1756-0F4 AB 1756-DNB AB 1756-IB32/A AB 1756-0X8I AB 1756-DNB/A AB 1756-IF16 AB 1756-A10 AB 1756-DNB/A/B AB 1756-IF16/A AB 1756-A13 AB 1756-DNB/B AB 1756-IF161 AB 1756-A17 AB 1756-DNB/C1756-DNB/D AB 1756-IF16H AB 1756-A4 AB 1756-DNB/D AB 1756-IF4FXOF2F AB 1756-A7 AB 1756-DNB1 AB 1756-IF6CIS AB 1756-BA11 AB 1756-EN2T AB 1756-IF6I AB 1756-BA2 AB 1756-EN2T/C AB 1756-IF8 AB 1756-CFM AB 1756-EN2T/D AB 1756-IF8H AB 1756-CN2 AB 1756-EN2TR AB 1756-IF8U AB 1756-CN2/B AB 1756-EN2TR/B AB 1756-IG16 AB 1756-CN21 AB 1756-EN3TR AB 1756-IH16I AB 1756-CN2R AB 1756-ENBT AB 1756-IM16I AB 1756-CN2R/B AB 1756-ENBT/A AB 1756-IM16I1203-CN1 AB 1756-CNB AB 1756-ENET AB 1756-IN16 AB 1756-CNB/A/B/C/D AB 1756-EWEB AB 1756-IR6I AB 1756-CNB/D AB 1756-HSC AB 1756-IRT8I AB 1756-CNB/E AB 1756-HSC1 AB 1756-IT6I AB 1756-CNBR AB 1756-HYD02 AB 1756-IT6I2 AB 1756-CNBR/A/D AB 1756-IA16/A AB 1756-IV16 AB 1756-CNBR/D AB 1756-IA32 AB 1756-IV32 AB 1756-CNBR/E AB 1756-IB16 AB 1756-L1M1 AB 1756-CPR2 AB 1756-IB16/A AB 1756-L35E AB 1756-DHRIO AB 1756-IB16D AB 1756-L55M12 AB 1756-DHRIO/C AB 1756-IB16I AB 1756L55M13 AB 1756-DHRIO/D AB 1756-IB16ISOE AB 1756-L55M13 AB 1756-DHRIO/E AB 1756-IB16SOE AB 1756-L55M14 AB 1756L55M22 AB 1756-L55M16 AB 1756L55M16 AB 1756-L55M23 AB 1756L55M23 AB 1756-L55M22
