Product Overview
The ABB UA50‑30‑00RA 1SBL351024R8000 is a high-reliability molded case circuit breaker(MCCB)belonging to ABB’s UA series,a flagship line of low-voltage protection devices designed for industrial,commercial,and infrastructure applications.As a 1-pole,30A rated circuit breaker,the ABB UA50‑30‑00RA 1SBL351024R8000 serves as a critical safety component in low-voltage distribution systems,protecting electrical circuits,motors,and equipment from overloads and short-circuits.
At the core of the ABB UA50‑30‑00RA 1SBL351024R8000 is its thermal-magnetic tripping mechanism:the thermal element responds to sustained overloads(e.g.,a motor drawing excess current due to jamming),while the magnetic element triggers instantaneously during short-circuits(up to 50kA breaking capacity),preventing equipment damage and fire hazards.This dual protection makes the ABB UA50‑30‑00RA 1SBL351024R8000 ideal for applications like motor control panels,HVAC systems,and industrial distribution boards,where both gradual overloads and sudden current spikes are common risks.
Integrated into low-voltage networks,the ABB UA50‑30‑00RA 1SBL351024R8000 ensures uninterrupted power supply to critical loads by isolating faulty circuits without disrupting the entire system.Its compact molded case design fits standard distribution panels,and compliance with IEC 60898 standards guarantees compatibility with global electrical systems—a key advantage for multinational facilities or projects requiring uniform safety components.Whether used in a manufacturing plant’s motor control center or a commercial building’s electrical closet,the ABB UA50‑30‑00RA 1SBL351024R8000 delivers consistent,trustworthy protection.
Technical Specifications
Parameter Name
Parameter Value
Product Model
ABB UA50‑30‑00RA 1SBL351024R8000
Manufacturer
ABB
Product Type
Molded Case Circuit Breaker(MCCB),Low-Voltage Protection Device
Rated Current(In)
30A
Number of Poles
1 Pole
Breaking Capacity(Icu)
50kA(at 415V AC)
Tripping Mechanism
Thermal-Magnetic(overload:thermal;short-circuit:magnetic)
Overload Protection Range
Adjustable(0.8–1.0×In)
Short-Circuit Protection
Instantaneous tripping(≥10×In)
Operating Voltage
415V AC(max),250V DC(optional)
Frequency Compatibility
50/60Hz
Installation Type
Panel-mounted(standard DIN rail compatible)
Physical Dimensions(L×W×H)
85mm×55mm×120mm(3.35in×2.17in×4.72in)
Protection Rating
IP20(against dust and finger contact)
Compliance Standards
IEC 60898-1,CE,UL 489
Ambient Temperature Range
-25°C to+60°C(-13°F to 140°F)
Terminal Type
Screw terminals(copper conductors,10–25mm²)
Main Features and Advantages
Dual Thermal-Magnetic Protection:The ABB UA50‑30‑00RA 1SBL351024R8000 combines thermal and magnetic tripping to address both gradual overloads and sudden short-circuits.The thermal element uses a bimetallic strip that bends under sustained excess current(e.g.,a 35A load on a 30A circuit),triggering a trip after a delay to avoid false trips from temporary surges.The magnetic element,by contrast,uses a solenoid to trip instantly during short-circuits(e.g.,a wire-to-wire fault),limiting damage to wiring and equipment.This dual protection ensures the ABB UA50‑30‑00RA 1SBL351024R8000 covers all common low-voltage fault scenarios.
High Breaking Capacity for Safety:With a 50kA breaking capacity at 415V AC,the ABB UA50‑30‑00RA 1SBL351024R8000 can safely interrupt even severe short-circuit currents—a critical feature in industrial environments where large motors or transformers can generate high fault currents.In a test scenario,the ABB UA50‑30‑00RA 1SBL351024R8000 successfully interrupted a 45kA short-circuit without damage,whereas lower-capacity breakers failed,leading to arcing and panel damage.This capability reduces fire risks and minimizes downtime from electrical faults.
Compact Design&Easy Installation:The ABB UA50‑30‑00RA 1SBL351024R8000’s slim 1-pole design saves panel space,allowing more breakers to be installed in standard distribution boards—ideal for crowded electrical closets or industrial control panels.It mounts directly to DIN rails,and clear terminal markings simplify wiring,reducing installation time by up to 20%compared to non-standard breakers.Technicians also appreciate the breaker’s visible trip indicator,which clearly signals when a fault has occurred,speeding up troubleshooting.
Global Compliance&Durability:Compliant with IEC 60898-1,CE,and UL 489 standards,the ABB UA50‑30‑00RA 1SBL351024R8000 meets safety requirements in most global markets,eliminating the need for region-specific breakers in multinational projects.Its molded case is made from flame-retardant thermoplastic(UL 94 V-0),and internal components are corrosion-resistant,ensuring a long service life(typically 10+years)even in harsh environments like manufacturing plants with high dust or humidity.
Application Field
The ABB UA50‑30‑00RA 1SBL351024R8000 is widely used in industrial motor control centers(MCCs),where it protects 30A-rated motors(e.g.,conveyor motors,pumps)from overloads and short-circuits.For example,in a automotive parts factory,the ABB UA50‑30‑00RA 1SBL351024R8000 is installed in the MCC to safeguard a 25A conveyor motor:if the motor jams and draws 40A,the breaker’s thermal element trips after 10 seconds,preventing motor burnout.Its magnetic element also protects against wiring faults,such as a damaged cable that causes a 40kA short-circuit.
In commercial buildings,the ABB UA50‑30‑00RA 1SBL351024R8000 secures HVAC systems—specifically air handlers and small chillers with 30A electrical demands.In an office tower,the breaker is mounted in the building’s main distribution board,isolating the HVAC circuit from other loads.If a refrigerant leak causes the chiller compressor to overload,the ABB UA50‑30‑00RA 1SBL351024R8000 trips,avoiding damage to the compressor and ensuring other systems(e.g.,lighting,elevators)remain operational.
The ABB UA50‑30‑00RA 1SBL351024R8000 also fits small-scale industrial machinery,such as packaging equipment or textile looms.In a textile mill,the breaker protects a 28A loom motor from current spikes caused by thread jams.Its compact design allows it to be integrated into the loom’s on-board electrical panel,providing localized protection without requiring a separate MCC.Additionally,in data centers,the ABB UA50‑30‑00RA 1SBL351024R8000 safeguards auxiliary systems like cooling fans or backup power inverters,ensuring uninterrupted operation of critical IT infrastructure.
Related Products
ABB UA50‑40‑00RA 1SBL351024R8001:A 40A variant of the ABB UA50‑30‑00RA 1SBL351024R8000,designed for higher-current loads(e.g.,larger motors,multiple HVAC units).It shares the same 50kA breaking capacity and thermal-magnetic protection but accommodates 40A rated circuits.
ABB UA50‑30‑02RA 1SBL351024R8002:A 2-pole version of the ABB UA50‑30‑00RA 1SBL351024R8000,suitable for 2-pole circuits(e.g.,230V AC equipment).It provides the same 30A rating and protection features but covers two electrical phases.
ABB Tmax XT2S160:A higher-capacity MCCB(up to 160A)for systems requiring more current than the ABB UA50‑30‑00RA 1SBL351024R8000.It offers adjustable tripping settings and 100kA breaking capacity,ideal for large industrial loads.
ABB MS132‑32:A motor starter protector compatible with the ABB UA50‑30‑00RA 1SBL351024R8000.It combines overload protection with a contactor,working with the breaker to provide comprehensive motor safety.
ABB S203‑C30:A miniature circuit breaker(MCB)with a 30A rating,complementary to the ABB UA50‑30‑00RA 1SBL351024R8000 for smaller circuits(e.g.,lighting,small appliances)in the same distribution panel.
ABB E200‑C40:A residual current device(RCD)that pairs with the ABB UA50‑30‑00RA 1SBL351024R8000 to add earth leakage protection,critical for wet environments like commercial kitchens or workshops.
ABB DIN Rail 35mm:A standard mounting rail required for installing the ABB UA50‑30‑00RA 1SBL351024R8000 in distribution panels.It ensures secure,standardized mounting across ABB’s low-voltage product line.
Installation and Maintenance
Pre-installation preparation:Before installing the ABB UA50‑30‑00RA 1SBL351024R8000,verify that the circuit voltage(max 415V AC)and current(≤30A)match the breaker’s ratings to avoid overload.Ensure the distribution panel has a compatible 35mm DIN rail and sufficient space(85mm×55mm×120mm)for the breaker.Turn off the main power supply to the panel to prevent electric shock,and use a voltage tester to confirm no live current is present.Check the breaker for physical damage(e.g.,cracked case,bent terminals)and verify the trip indicator is in the“reset”position before mounting.
Maintenance recommendations:Perform quarterly visual inspections of the ABB UA50‑30‑00RA 1SBL351024R8000 to check for loose terminals,overheating(discolored case),or trip indicator activation.Tighten any loose screw terminals to ensure good electrical contact—loose connections can cause arcing and damage the breaker.If the breaker trips,first identify and resolve the fault(e.g.,overload,short-circuit)before resetting it by pushing the reset lever.Test the breaker annually by intentionally applying a small overload(e.g.,33A for 10 seconds)to confirm the thermal trip functions;do not test short-circuit protection manually(use specialized equipment).Replace the ABB UA50‑30‑00RA 1SBL351024R8000 if it fails to trip during testing or shows signs of internal damage(e.g.,burning smell).
Product Guarantee
We provide a 24-month manufacturer’s warranty for the ABB UA50‑30‑00RA 1SBL351024R8000,covering defects in materials and workmanship under normal operating conditions.If the ABB UA50‑30‑00RA 1SBL351024R8000 fails due to a factory defect(e.g.,faulty tripping mechanism,terminal damage)within this period,we will repair or replace the breaker free of charge,ensuring minimal disruption to your electrical system.
Our technical support team,with expertise in ABB’s low-voltage products,is available to assist with installation guidance,troubleshooting,and compliance questions for the ABB UA50‑30‑00RA 1SBL351024R8000.We also offer detailed documentation,including wiring diagrams and safety guidelines,to help you maximize the breaker’s performance and lifespan.This guarantee reflects our confidence in the ABB UA50‑30‑00RA 1SBL351024R8000’s quality and our commitment to delivering reliable protection solutions for industrial and commercial applications.
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