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Schneider Electric
250B
Schneider Electric Compact NSX 250B Circuit Breaker
Schneider Electric
From $1,345.42In stockSource updated 6/24/2026
Product Description
Schneider Electric Compact NSX250B Circuit Breaker with MicroLogic 5.2 Control Unit Specifications: Product Type : Molded Case Circuit Breaker (MCCB) Manufacturer : Schneider Electric Model : Compact NSX250B with MicroLogic 5.2 Device Application : Distribution protection Poles Description : 3P 3d Rated Current (In) : 250 A at 40 °C Trip Unit Name : MicroLogic 5.2 E (Ammeter or Energy-metering ) Trip Unit Technology : Electronic Trip Unit Rating : 100–250 A (adjustable) Protection Type : L: Overload protection (long time) S: Short-time short-circuit protection (adjustable delay) I: Instantaneous short-circuit protection Rated Insulation Voltage (Ui) : 800 V AC 50/60 Hz Rated Impulse Withstand Voltage (Uimp) : 8 kV Rated Operational Voltage (Ue) : 690 V AC 50/60 Hz Network Type : AC Network Frequency : 50/60 Hz Breaking Capacity Code : B (25 kA at 415 V AC) Breaking Capacity (Icu) : 40 kA at 220/240 V AC 50/60 Hz (IEC 60947-2) 25 kA at 380/415 V AC 50/60 Hz (IEC 60947-2) 20 kA at 440 V AC 50/60 Hz (IEC 60947-2) 15 kA at 500 V AC 50/60 Hz (IEC 60947-2) Rated Service Breaking Capacity (Ics) : 40 kA at 220/240 V AC 50/60 Hz (IEC 60947-2) 25 kA at 380/415 V AC 50/60 Hz (IEC 60947-2) 20 kA at 440 V AC 50/60 Hz (IEC 60947-2) 15 kA at 500 V AC 50/60 Hz (IEC 60947-2) Suitability for Isolation : Yes (EN/IEC 60947-2) Utilization Category : Category A Control Type : Toggle Mounting Mode : Fixed Mounting Support : Backplate Mounting Position : Horizontal, vertical, or flat on the back Connection Type : Front connection (upside and downside) Connection Pitch : 35 mm Long-Time Pick-Up Adjustment Type (Ir) : Adjustable via dials or keypad (9 settings) Long-Time Pick-Up Adjustment Range : 100–250 A Long-Time Protection Delay Adjustment Type (tr) : Adjustable Long-Time Protection Delay Adjustment Range : 400 s at 1.5 x Ir 16 s at 6 x Ir 11 s at 7.2 x Ir Thermal Memory : 20 minutes before and after tripping Short-Time Pick-Up Adjustment Type (Isd) : Adjustable (9 settings) Short-Time Pick-Up Adjustment Range : 1.5–10 x Ir Short-Time Protection Delay Adjustment Type (tsd) : Adjustable Short-Time Protection Delay Adjustment Range : 0–0.4 s I²t ON/OFF : Selectable for short-time protection curve Instantaneous Pick-Up Adjustment Type (Ii) : Adjustable Display Type : LCD (for settings and measurements) Local Signalling : Flashing LED (green): Ready to operate LED 90 % Ir (orange): Overload pre-alarm LED 105 % Ir (red): Overload alarm Measurement Functions (MicroLogic 5.2 E): Instantaneous and demand current measurements Energy metering Kilowatt-hour metering Operational assistance (e.g., peak demand, customized alarms, operation counters) Communication : Configurable for communication with other devices (e.g., via EcoStruxure Power architecture) Mechanical Durability : 20,000 cycles Electrical Durability : 20,000 cycles at 440 V In/2 10,000 cycles at 440 V In 10,000 cycles at 690 V In/2 5,000 cycles at 690 V In Power Dissipation per Pole : 17.6 W Number of Slots for Electrical Auxiliaries : 5 slots IP Degree of Protection : IP40 (IEC 60529) IK Degree of Protection : IK07 (IEC 62262) Electrical Shock Protection Class : Class II (front face) Pollution Degree : 3 (IEC 60664-1) Ambient Air Temperature for Operation : -25 to 70 °C Ambient Air Temperature for Storage : -50 to 85 °C Relative Humidity : 0–95 % Operating Altitude : 0–2000 m without derating; 2000–5000 m with derating Standards Compliance : EN/IEC 60947-2, CCC, EAC, marine specifications Product Certifications : IEC, CCC, EAC Dimensions : Width: 105 mm (3P), 140 mm (4P) Height: 161 mm Depth: 86 mm Weight : Approximately 2.4 kg HS Code : 8536.20.90 Country of Origin : France
Buy Options
Condition, indicative price, stock, and lead time. Confirm current availability via RFQ.
ConditionPriceAvailabilityLead time
Used
Price: $1,345.42
Availability: Available to order
Lead time: Quoted after RFQ
Specifications
- Category
- Low-voltage Controls
- Product Type
- Molded Case Circuit Breaker (MCCB)
- Manufacturer
- Schneider Electric
- Model
- Compact NSX250B with MicroLogic 5.2
- Device Application
- Distribution protection
- Poles Description
- 3P 3d
- Rated Current (In)
- 250 A at 40 °C
- Trip Unit Name
- MicroLogic 5.2 E (Ammeter or Energy-metering )
- Trip Unit Technology
- Electronic
- Trip Unit Rating
- 100–250 A (adjustable)
- Protection Type
- L: Overload protection (long time)
- S
- Short-time short-circuit protection (adjustable delay)
- I
- Instantaneous short-circuit protection
- Rated Insulation Voltage (Ui)
- 800 V AC 50/60 Hz
- Rated Impulse Withstand Voltage (Uimp)
- 8 kV
- Rated Operational Voltage (Ue)
- 690 V AC 50/60 Hz
- Network Type
- AC
- Network Frequency
- 50/60 Hz
- Breaking Capacity Code
- B (25 kA at 415 V AC)
- Breaking Capacity (Icu)
- 40 kA at 220/240 V AC 50/60 Hz (IEC 60947-2)
- Rated Service Breaking Capacity (Ics)
- 40 kA at 220/240 V AC 50/60 Hz (IEC 60947-2)
- Suitability for Isolation
- Yes (EN/IEC 60947-2)
- Utilization Category
- Category A
- Control Type
- Toggle
- Mounting Mode
- Fixed
- Mounting Support
- Backplate
- Mounting Position
- Horizontal, vertical, or flat on the back
- Connection Type
- Front connection (upside and downside)
- Connection Pitch
- 35 mm
- Long-Time Pick-Up Adjustment Type (Ir)
- Adjustable via dials or keypad (9 settings)
- Long-Time Pick-Up Adjustment Range
- 100–250 A
- Long-Time Protection Delay Adjustment Type (tr)
- Adjustable
- Long-Time Protection Delay Adjustment Range
- 400 s at 1.5 x Ir
- Thermal Memory
- 20 minutes before and after tripping
- Short-Time Pick-Up Adjustment Type (Isd)
- Adjustable (9 settings)
- Short-Time Pick-Up Adjustment Range
- 1.5–10 x Ir
- Short-Time Protection Delay Adjustment Type (tsd)
- Adjustable
- Short-Time Protection Delay Adjustment Range
- 0–0.4 s
- I²t ON/OFF
- Selectable for short-time protection curve
- Instantaneous Pick-Up Adjustment Type (Ii)
- Adjustable
- Display Type
- LCD (for settings and measurements)
- Local Signalling
- Flashing LED (green): Ready to operate
- LED 90 % Ir (orange)
- Overload pre-alarm
- LED 105 % Ir (red)
- Overload alarm
- Measurement Functions (MicroLogic 5.2 E)
- Instantaneous and demand current measurements
- Communication
- Configurable for communication with other devices (e.g., via EcoStruxure Power architecture)
- Mechanical Durability
- 20,000 cycles
- Electrical Durability
- 20,000 cycles at 440 V In/2
- Power Dissipation per Pole
- 17.6 W
- Number of Slots for Electrical Auxiliaries
- 5 slots
- IP Degree of Protection
- IP40 (IEC 60529)
- IK Degree of Protection
- IK07 (IEC 62262)
- Electrical Shock Protection Class
- Class II (front face)
- Pollution Degree
- 3 (IEC 60664-1)
- Ambient Air Temperature for Operation
- -25 to 70 °C
- Ambient Air Temperature for Storage
- -50 to 85 °C
- Relative Humidity
- 0–95 %
- Operating Altitude
- 0–2000 m without derating; 2000–5000 m with derating
- Standards Compliance
- EN/IEC 60947-2, CCC, EAC, marine specifications
- Product Certifications
- IEC, CCC, EAC
- Dimensions
- Width: 105 mm (3P), 140 mm (4P)
- Height
- 161 mm
- Depth
- 86 mm
- Weight
- Approximately 2.4 kg
- HS Code
- 8536.20.90
- Country of Origin
- France
- Product
- Energy metering
Before we quote this part
Actual photos when available
Nameplate, condition, and visible wear can be shared before quote when stock photos are not enough.
Test notes for used units
Power-on or function test status is stated when available, with clear condition grading.
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Clear DOA boundary
For tested units, quote terms can include 7-day DOA support unless otherwise stated.
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We are not an authorized distributor, reseller, or representative of Siemens, Mitsubishi, Omron, or other manufacturers listed on this site. All product names, trademarks, brands, and logos are the property of their respective owners. Products may be used, refurbished, surplus, or sourced from the secondary market unless otherwise stated.
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FAQ
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What condition options are available for 250B?
We list Used for 250B (indicative availability and pricing — confirm on RFQ). See our condition policy at https://www.usedautomations.com/condition-codes.