cBallast
Industrial Parts Catalog
Datasheet generated 2026-10-07
sales@cballast.com
cballast.com

Unit breaker 1A 2P B (278719)

Eaton · Electrical Components · Miniature Circuit Breakers · Ireland · eaton.com
Part Number
278719  ·  HS 8536.90
Unit breaker 1A 2P B (278719)

Eaton 278719 Miniature circuit breaker (MCB), 1 A, 2p, characteristic: B.

Technical Specifications

Manufacturer part number (MPN)278719
EAN / GTIN4015082787196
HS code8536.90
Sales unitpcs
Package quantity60 pcs
Eaton catalogue number278719
Depth80 mm
Height75.5 mm
Width36 mm
Weight0.223 kg
CompliancesUL CSA09 (with supplementary protector only); RoHS conform
CertificationsIEC/EN 60898; UL (File No. E177451); North America (UL recognized, CSA certified); UL 1077; CSA (File No. 204453); IEC/EN 60947-2; UL (Category Control Number QVNU2, QVNU8); CE marking; CSA (Class No. 3215-30); CSA-C22.2 No. 235; EN45545-2; IEC 61373
Current limiting class3
FeaturesAdditional equipment possible
Special featuresAmbient temperature hint: a 1 °C increase results in a 0.5% linear reduction of current carrying capacity
Used withFAZ; Miniature circuit breaker
Amperage Rating1 A
ApplicationBranch circuits, not as BCPD Switchgear for industrial and advanced commercial applications xEffect - Switchgear for industrial and advanced commercial applications
Number of polesTwo-pole
Number of poles (protected)2
Number of poles (total)2
Release characteristicB
Tripping characteristicB
TypeFAZ Miniature circuit breaker
Ambient operating temperature - max75 °C
Ambient operating temperature - min-25 °C
Equipment heat dissipation, current-dependent3.1 W
Heat dissipation capacity0 W
Heat dissipation per pole, current-dependent0 W
Rated operational current for specified heat dissipation (In)1 A
Static heat dissipation, non-current-dependent0 W
Breaking capacity10 kA (UL1077)
Frequency rating - max60 Hz
Frequency rating - min50 Hz
Operational voltage (IEC/EN 60947-2) - max440 VAC
Overvoltage categoryIII
Pollution degree2
Rated impulse withstand voltage (Uimp)4 kV
Rated insulation voltage (Ui)440 V
Rated operational voltage (Ue) - max400 V
Rated service short-circuit breaking capacity (IEC/EN 60898-1) - Ics7.5 kA
Rated service short-circuit breaking capacity (IEC/EN 60947-2) - Ics7.5 kA
Rated short-circuit breaking capacity (IEC/EN 60898-1) - Icn at 230 V10 kA
Rated short-circuit breaking capacity (IEC/EN 60898-1)- Icn at 400 V10 kA
Rated short-circuit breaking capacity (IEC 60947-2)- Icu at 230 V15 kA
Rated short-circuit breaking capacity (IEC 60947-2)- Icu at 400 V15 kA
Rated switching capacity (IEC/EN 60898-1)10 kA
Rated switching capacity (IEC/EN 60947-2)15 kA
Rated switching capacity (IEC/EN 60947-2) at max voltage rating10 kA
Voltage rating240 V AC / 415 V AC
Voltage rating (IEC/EN 60898-1)415 VAC
Voltage rating (UL CSA 13)480 Y/277 V AC; 96 V DC
Voltage rating (UL)480Y/277 V
Voltage typeAC
Built-in depth70.5 mm
Connectable conductor cross section (multi-wired) - max25 mm²
Connectable conductor cross section (multi-wired) - min1 mm²
Connectable conductor cross section (solid-core) - max25 mm²
Connectable conductor cross section (solid-core) - min1 mm²
Degree of protectionUL/CSA Type: -; IP20 (IEC); IP20
Width in number of modular spacings2
Document NameDescription Action

Properties

MOQ1

Cross-References

Attached Documents