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IMO UB10C2020A 20 Amp 2 Pole Miniature Circuit Breaker: UL 489, C Curve, 10kA
DIN rail mount 20 amp miniature circuit breaker for industrial branch circuit protection. Features two-pole switching, C-curve tripping, thermo-magnetic operation and a 10kA short circuit breaking capacity.
✅ Designed for Industrial Branch Circuit Protection
The IMO Precision Controls UB10C2020A protects electrical circuits against overload and short circuit conditions. Its 20 amp rating and two-pole configuration support applications that require coordinated protection and disconnection across two conductors.
The breaker’s C tripping curve accommodates the moderate startup current produced by equipment such as transformers, relays, contactors and small motors while maintaining dependable protection during sustained overloads and electrical faults.
Reliable 20 Amp Protection for Industrial Control Panels
The IMO UB10C2020A 20 amp miniature circuit breaker provides thermo-magnetic overcurrent protection for industrial control panels, machine automation systems and electrical distribution equipment. Thermal tripping responds to sustained overload conditions, while magnetic tripping quickly isolates high-current short circuits to help reduce damage to wiring and connected equipment.
UL 489 approval allows the UB10C2020A to be used for qualifying branch circuit protection applications. Its compact DIN rail housing supports efficient panel layouts, while the built-in contact position indicator gives technicians a clear way to verify breaker status during operation, inspection and troubleshooting.
⚡ 20 Amp Rated Current
Protects industrial control and distribution circuits from damaging overload and short circuit conditions
🛡️ UL 489 Approved
Approved for qualifying branch circuit protection in industrial and commercial electrical systems
🔌 Two-Pole Protection
Provides coordinated interruption across two circuit conductors through one compact breaker assembly
💥 10kA Breaking Capacity
Interrupts high available fault currents to help protect downstream wiring and electrical equipment
Key Features & Benefits
- 20 Amp Rated Current: Provides overcurrent protection for industrial control and electrical distribution circuits
- Two-Pole Configuration: Protects and disconnects two circuit conductors through a single breaker assembly
- C-Curve Tripping: Accommodates moderate inrush current from transformers, relays, contactors and small motors
- Thermo-Magnetic Operation: Combines thermal overload response with rapid magnetic short circuit tripping
- 10kA Breaking Capacity: Provides high fault-current interruption capability for demanding panel applications
- UL 489 Approved: Suitable for qualifying branch circuit protection applications
- DIN Rail Mounting: Installs efficiently in standard industrial control panels and electrical enclosures
- Contact Position Indicator: Provides quick visual confirmation of the breaker’s operating status
- Wide Voltage Capability: Rated for electrical systems up to 480Y/277VAC or 96VDC
- RoHS Compliant: Meets applicable hazardous-substance restrictions
✅ Why Choose the UB10C2020A?
The UB10C2020A combines UL 489 branch circuit approval, C-curve tripping and a 10kA interrupting rating in a compact two-pole design. It is a practical option for control panels that need dependable 20 amp protection without consuming unnecessary DIN rail space.
⚠️ Installation Requirements
Qualified installation: Installation and servicing should be completed by qualified electrical personnel in accordance with applicable electrical codes.
Verify circuit requirements: Confirm that the breaker’s current, voltage, pole configuration and interrupting capacity are appropriate for the application.
Terminal torque: Tighten connected conductors to the specified 2.5 Nm (22.2 lb-in) fastening torque.
🔧 Thermo-Magnetic Protection
Thermal protection: Responds to sustained overload current that can overheat conductors or damage connected equipment.
Magnetic protection: Trips rapidly when a high short circuit current is detected, helping isolate the fault before damage spreads.
C-curve response: Allows moderate equipment startup current while maintaining dependable circuit protection.
🏭 Common Applications
The IMO UB10C2020A is well suited for branch circuits inside industrial control panels and OEM machinery that require a two-pole, 20 amp circuit breaker. Its C-curve response helps prevent nuisance tripping when connected equipment produces a moderate startup current.
It can also protect circuits associated with machine automation systems, electrical distribution equipment and panel-mounted control assemblies when the application falls within the breaker’s specified voltage, temperature and fault-current ratings.
Specifications
| Part Number |
UB10C2020A |
| Brand |
IMO Precision Controls |
| Product Type |
Miniature Circuit Breaker (MCB) |
| Number of Poles |
2 Pole |
| Mounting Method |
DIN Rail |
| Approvals |
UL 489, IEC 60947-2, IEC 60898-1 |
| Compliance |
RoHS |
Electrical
| Rated Current |
20 Amp |
| Voltage Rating |
480Y/277VAC, 96VDC |
| Tripping Curve |
C Curve (5–10 In) |
| Protection Type |
Thermo-Magnetic |
| Frequency |
50/60 Hz |
| Breaking Capacity |
10kA |
Physical
| Dimensions |
4.25" L x 1.38" W x 2.64" D
(108 x 35 x 67 mm) |
| Wire Range |
18–3 AWG |
| Fastening Torque |
2.5 Nm (22.2 lb-in) |
| Contact Indicator |
Yes |
| Enclosure Rating |
NEMA 1 (IP20) |
Environmental
| Calibration Temperature |
104°F (40°C) |
| Operating Temperature |
-13°F to 131°F
(-25°C to 55°C) |
| Vibration Resistance |
±1 mm at 5–25 Hz;
50 m/s² at 25–150 Hz |
Service Life
| Mechanical Life |
20,000 Operations |
| Electrical Life |
6,000 Operations |
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