2800861 Thermomagnetic circuit breaker rated 4A, 277VAC/50VDC. Suitable for IEC 60934 and UL 1077 applications.
Mfr Part #:

2800861

Mfr Name: Phoenix Contact
Phoenix Contact
Thermomagnetic circuit breaker rated 4A, 277VAC/50VDC. Suitable for IEC 60934 and UL 1077 applications.
Stock on Request

2800861 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Actuator Type
Breaker Type
Color
Current Rating (Amps)
Design
Fuse Type
Height
Insulation Resistance
Mounting Type
Number of Poles
Number of Positions
SVHC Present
Voltage Rating

2800861 Description

Short technical summary and product information.

The Phoenix Contact 2800861 is a 1-pole thermomagnetic circuit breaker with a rated current of 4A. It supports multiple operating voltages: 240V AC (IEC 60934), 277V AC (UL 1077/UL 508), and 50V DC. The trip mechanism is thermomagnetic with a trip-free design, using an S-type actuator and fast blow fuse characteristic. The auxiliary circuit is rated 277V AC/0.5A or 50V DC/1A for low-induction loads. The device has a short-circuit switching capacity of 300A at 240V AC and 600A at 50V DC, with a required backup fuse of 16A. Insulation resistance exceeds 100MΩ at 500V DC. It operates in ambient temperatures from -30°C to 60°C and can be stored from -40°C to 80°C. The enclosure offers IP30 protection at the actuation area and is made of V0 flammability class materials. Dimensions are 45mm height, 12.3mm width, 52mm depth for the device, and 90mm x 12.3mm x 77.3mm for the complete module. It mounts on a base element and is gray in color. This circuit breaker is suitable for industrial control panels, machinery protection, and branch circuit applications.

2800861 Quick Information

Product Type: Circuit Breaker
Canonical Name: Thermomagnetic Circuit Breaker, 4A, 277VAC/50VDC
Subcategory: Circuit Breakers

2800861 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

2800861 Features

  • Rated for 4A continuous current.
  • Operates at 277V AC and 50V DC.
  • Thermomagnetic trip mechanism with trip-free feature.
  • Wide operating temperature range -30°C to 60°C.
  • V0 flammability class for safety.

2800861 Applications

  • Overcurrent protection for industrial control panels.
  • Used in automation and machinery control circuits.
  • Ideal for HVAC and building automation systems.
  • Protects power supplies and transformers.

2800861 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the rated voltage of the 2800861 circuit breaker?

Rated voltage is 240 V AC (IEC 60934), 277 V AC (UL 1077/UL 508), and 50 V DC.

What is the operating temperature range?

-30°C to 60°C.

What is the rated current for this circuit breaker?

4 A.

What is the short-circuit switching capacity?

300 A at 240 V AC and 600 A at 50 V DC.

What is the tripping method?

Thermomagnetic.

What are the dimensions of the 2800861?

Device: 45mm x 12.3mm x 52mm; complete module: 90mm x 12.3mm x 77.3mm.

What is the ambient storage temperature range?

-40°C to 80°C.

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