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140XCP60000 SCHNEIDER

Brand: Schneider

Model number:140XCP60000

Colour:new                  

Warranty: 12 months

Lead Time:3-day working day   

Country of origin: USA Price: Please contact us         

Product weight:0.40kg

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

140XCP60000    SCHNEIDER

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Products Name: 140XCP60000 SCHNEIDER

PRODUCT DESCRIPTION

When using shielded cable for control signals, if the cable is connecting equipment that is close together and the grounds are bonded together, then both ends of the shield can be grounded. If the cable is connected to equipment that may have a different ground potential, then ground the shield at one end only to prevent large currents from flowing in the shield. The shield on the ungrounded 

end may be tied to ground with a capacitor (for example: 10 nF, 100V or higher) in order to provide a path for the higher frequency noise.

Description:

Ratings

When designing an electrical distribution system, overcurrent protective devices are generally selected 

based on performance requirements. Factors influencing this selection include system voltage, 

continuous current, interrupting rating, and frequency.

Voltage Rating

The circuit breaker must have a voltage rating greater than, or equal to, the system voltage. When a 

circuit breaker clears an overcurrent, it is done in two steps. First, the current sensing system identifies 

the overcurrent and releases the tripping mechanism. This results in a parting of the contacts. The 

circuit breaker must then extinguish the voltage arc across the contacts. If the circuit breaker has the 

correct voltage rating, it can efficiently extinguish this voltage arc. QO and QOB circuit breakers are 

rated for use in the following voltage systems:

• 120 Vac

• 208/120 Vac

• 120/240 Vac

• 240 Vac

• 48 Vdc (10–70 A for 1 and 2 pole circuit breakers, 10–60 A for 3 pole circuit breakers)

Continuous Current Rating

The continuous current rating of a circuit breaker is the maximum current in amperes (dc or rms ac at 

rated frequency) which a device will carry continuously without exceeding the specified allowable 

temperature rise. Sometimes referred to as the ampere rating or handle rating of the circuit breaker, 

the continuous current rating relates to the system current flow under normal conditions.

UL and CSA require that circuit breakers must be able to carry their continuous current rating 

indefinitely at 40°C in free air in order to achieve a UL Listing/CSA Certification. The National Electrical 

Code (NEC) and the Canadian Electrical Code (CEC) recognize that devices applied in end-use 

equipment can be affected by heat build up during normal operating conditions. For this reason, the 

codes require that circuit breakers be selected based on the characteristics of the load (particularly, 

the portion of the load which will be on continuously for three hours or more at a time).

Frequency Rating

The standard rated frequency for circuit breakers is 60 Hz. Circuit breakers are also rated for dc 

applications as shown in Table 1. Many Square D circuit breakers can also be applied on 50 Hz systems 

without derating. GFCI, AFCI and EPD devices are rated for 60 Hz operation only. Frequencies can affect 

the thermal, magnetic and short-circuit characteristics of circuit breakers. See Data Bulletin 0100DB0101 

Determining Current Carrying Capacity in Special Applications. Contact the Field Sales office before 

applying circuit breakers on systems at frequencies other than 50/60 Hz.


140XCP40100    SCHNEIDER

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

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