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LZMB2-A250-I 111924 Y7-111924 EATON ELECTRIC Circuit-breaker, 3 p, 250A
LZMB2-A250-I
LZMB2-A250-I
Y7-111924
EATON - MOELLER
1 unit
Circuit-breaker, 3 p, 250A
LZMB2-A250-I
Eaton Moeller series Power Defense - Molded Case Circuit Breaker. Circuit-breaker LZM, 3 p, 250A, B2-A250-I
Automation > Power circuit-breaker for trafo/generator/installation protection
Circuit Breakers LZM
Product condition, packaging, certifications and applicable manufacturer warranty terms are confirmed with the quotation.
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An LZMB2-A250-I 111924 Y7-111924 EATON ELECTRIC Circuit-breaker is an electro-mechanical protective device engineered to automatically disconnect electrical circuits during overload or short-circuit conditions. Facilities management and panel builders deploy these components within commercial and industrial distribution boards to safeguard wiring infrastructure and connected machinery. Pricing, availability and lead time are confirmed per enquiry through an RFQ.
- Rated permanent current Iu: 250 A
- Rated voltage: 440 V
- Rated short-circuit breaking capacity Icu at 400 V, 50 Hz: 25 kA
- Overload release current setting: 200 A
- Adjustment range short-term delayed short-circuit release: 0 A
- Adjustment range undelayed short-circuit release: 1500 A
- Device construction: Built-in device fixed built-in technique
- Integrated earth fault protection: No
- Type of electrical connection of main circuit: Screw connection
- Suitable for DIN rail (top hat rail) mounting: No
- DIN rail (top hat rail) mounting optional: Yes
- Number of auxiliary contacts as normally closed contact: 0
- Number of auxiliary contacts as normally open contact: 0
- Number of auxiliary contacts as change-over contact: 0
- With switched-off indicator: No
- With integrated under voltage release: No
More info
▲General specifications
Product Name
Eaton Moeller series Power Defense molded case circuit-breaker
Catalog Number
111924
Model Code
LZMB2-A250-I
EAN
4015081114726
Product Length/Depth
142 mm
Product Height
185 mm
Product Width
105 mm
Product Weight
2.364 kg
Compliances
RoHS conform
Certifications
IEC/EN 60947
VDE 0660
IEC
VDE 0660
IEC
Product specifications
Type
Circuit breaker
Special features
Application
Use in unearthed supply systems at 440 V
Amperage Rating
250 A
Voltage rating
440 V - 440 V
Circuit breaker frame type
LZM2
Features
Motor drive optional
Protection unit
Protection unit
10.10 Temperature rise
The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
10.11 Short-circuit rating
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
10.12 Electromagnetic compatibility
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
10.13 Mechanical function
The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
10.2.2 Corrosion resistance
Meets the product standard's requirements.
10.2.3.1 Verification of thermal stability of enclosures
Meets the product standard's requirements.
10.2.3.2 Verification of resistance of insulating materials to normal heat
Meets the product standard's requirements.
10.2.3.3 Resist. of insul. mat. to abnormal heat/fire by internal elect. effects
Meets the product standard's requirements.
10.2.4 Resistance to ultra-violet (UV) radiation
Meets the product standard's requirements.
10.2.5 Lifting
Does not apply, since the entire switchgear needs to be evaluated.
10.2.6 Mechanical impact
Does not apply, since the entire switchgear needs to be evaluated.
10.2.7 Inscriptions
Meets the product standard's requirements.
10.3 Degree of protection of assemblies
Does not apply, since the entire switchgear needs to be evaluated.
10.4 Clearances and creepage distances
Meets the product standard's requirements.
10.5 Protection against electric shock
Does not apply, since the entire switchgear needs to be evaluated.
10.6 Incorporation of switching devices and components
Does not apply, since the entire switchgear needs to be evaluated.
10.7 Internal electrical circuits and connections
Is the panel builder's responsibility.
10.8 Connections for external conductors
Is the panel builder's responsibility.
10.9.2 Power-frequency electric strength
Is the panel builder's responsibility.
10.9.3 Impulse withstand voltage
Is the panel builder's responsibility.
10.9.4 Testing of enclosures made of insulating material
Is the panel builder's responsibility.
Pollution degree
3
Mounting Method
Fixed
DIN rail (top hat rail) mounting optional
Built-in device fixed built-in technique
DIN rail (top hat rail) mounting optional
Built-in device fixed built-in technique
Climatic proofing
Damp heat, cyclic, to IEC 60068-2-30
Damp heat, constant, to IEC 60068-2-78
Damp heat, constant, to IEC 60068-2-78
Equipment heat dissipation, current-dependent
58.13 W
Utilization category
A (IEC/EN 60947-2)
Isolation
300 V AC (between the auxiliary contacts)
500 V AC (between auxiliary contacts and main contacts)
500 V AC (between auxiliary contacts and main contacts)
Number of auxiliary contacts (change-over contacts)
0
Number of auxiliary contacts (normally closed contacts)
0
Number of auxiliary contacts (normally open contacts)
0
Protection against direct contact
Finger and back-of-hand proof to DIN EN 50274/VDE 0106 part 110
Degree of protection
In the area of the HMI devices: IP20 (basic protection type)
IP20
IP20
Direction of incoming supply
As required
Electrical connection type of main circuit
Screw connection
Lifespan, mechanical
20000 operations
Overvoltage category
III
Rated operational current
300 A (380/400 V AC-1, making and breaking capacity)
250 A (660-690 V AC-3, making and breaking capacity)
300 A (415 V AC-1, making and breaking capacity)
250 A (415 V AC-3, making and breaking capacity)
250 A (660-690 V AC-3, making and breaking capacity)
300 A (415 V AC-1, making and breaking capacity)
250 A (415 V AC-3, making and breaking capacity)
Degree of protection (IP), front side
IP66 (with door coupling rotary handle)
IP40 (with insulating surround)
IP40 (with insulating surround)
Degree of protection (terminations)
IP00 (terminations, phase isolator and band terminal)
IP10 (tunnel terminal)
IP10 (tunnel terminal)
Number of poles
Three-pole
Terminal capacity (copper strip)
Max. 10 segments of 16 mm x 0.8 mm at rear-side connection (punched)
Min. 2 segments of 9 mm x 0.8 mm at box terminal
Min. 2 segements of 16 mm x 0.8 mm at rear-side connection (punched)
Max. 10 segments of 16 mm x 0.8 mm at box terminal
Min. 2 segments of 9 mm x 0.8 mm at box terminal
Min. 2 segements of 16 mm x 0.8 mm at rear-side connection (punched)
Max. 10 segments of 16 mm x 0.8 mm at box terminal
Lifespan, electrical
10000 operations at 400 V AC-1
6500 operations at 415 V AC-3
10000 operations at 415 V AC-1
6500 operations at 415 V AC-3
10000 operations at 415 V AC-1
Functions
System and cable protection
Shock resistance
20 g (half-sinusoidal shock 20 ms)
Position of connection for main current circuit
Front side
Rated operational current for specified heat dissipation (In)
250 A
Release system
Thermomagnetic release
Short-circuit total breaktime
< 10 ms
Short-circuit release non-delayed setting - max
2500 A
Short-circuit release non-delayed setting - min
1500 A
Terminal capacity (control cable)
0.75 mm² - 1.5 mm² (2x)
0.75 mm² - 2.5 mm² (1x)
0.75 mm² - 2.5 mm² (1x)
Terminal capacity (copper busbar)
Min. 16 mm x 5 mm direct at switch rear-side connection
M8 at rear-side screw connection
Max. 20 mm x 5 mm direct at switch rear-side connection
M8 at rear-side screw connection
Max. 20 mm x 5 mm direct at switch rear-side connection
Terminal capacity (copper solid conductor/cable)
16 mm² (1x) at tunnel terminal
4 mm² - 16 mm² (2x) direct at switch rear-side connection
4 mm² - 16 mm² (1x) at box terminal
4 mm² - 16 mm² (1x) direct at switch rear-side connection
4 mm² - 16 mm² (2x) at box terminal
4 mm² - 16 mm² (2x) direct at switch rear-side connection
4 mm² - 16 mm² (1x) at box terminal
4 mm² - 16 mm² (1x) direct at switch rear-side connection
4 mm² - 16 mm² (2x) at box terminal
Terminal capacity (aluminum solid conductor/cable)
16 mm² (1x) at tunnel terminal
Terminal capacity (copper stranded conductor/cable)
25 mm² - 185 mm² (1x) at tunnel terminal
25 mm² - 70 mm² (2x) at box terminal
25 mm² - 70 mm² (2x) direct at switch rear-side connection
25 mm² - 185 mm² (1x) at box terminal
25 mm² - 185 mm² (1x) direct at switch rear-side connection
25 mm² - 70 mm² (2x) at box terminal
25 mm² - 70 mm² (2x) direct at switch rear-side connection
25 mm² - 185 mm² (1x) at box terminal
25 mm² - 185 mm² (1x) direct at switch rear-side connection
Terminal capacity (aluminum stranded conductor/cable)
25 mm² - 185 mm² (1x) at tunnel terminal
Handle type
Rocker lever
Short delay current setting (Isd) - max
0 A
Short delay current setting (Isd) - min
0 A
Instantaneous current setting (Ii) - max
2500 A
Instantaneous current setting (Ii) - min
1500 A
Number of operations per hour - max
120
Overload current setting (Ir) - max
250 A
Overload current setting (Ir) - min
200 A
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 230 V, 50/60 Hz
30 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 400/415 V, 50/60 Hz
25 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 440 V, 50/60 Hz
18.5 kA
Rated short-circuit making capacity Icm at 400/415 V, 50/60 Hz
53 kA
Rated short-circuit making capacity Icm at 440 V, 50/60 Hz
53 kA
Standard terminals
Screw terminal
Rated short-circuit making capacity Icm at 240 V, 50/60 Hz
63 kA
Rated impulse withstand voltage (Uimp) at auxiliary contacts
6000 V
Rated impulse withstand voltage (Uimp) at main contacts
8000 V
Rated insulation voltage (Ui)
690 V AC