Description

1. CHNT 125A: Refers to a specific model or type of circuit breaker, with a current rating of 125 amps.
2. NM1-122S/3300: This could be the model or series number of the device, identifying the specific configuration or characteristics of the breaker.
3. IN 125A: Again, this indicates the current rating of 125 amps.
4. UI 800V: The rated insulation voltage is 800 volts.
5. UIMP 8KV: This indicates the impulse withstand voltage, which is 8 kV (kilovolts). It represents the breaker’s ability to withstand surges or impulses.
6. F 50H: Likely refers to the frequency rating of the device, which is 50 Hz (Hertz).
7. CAT A: Could be referring to the Category A classification for circuit breakers. This often relates to the breaker’s operational characteristics.
8. LI 10IN: Indicates the short-circuit current rating, with 10IN possibly signifying a multiplier of the rated current (125A × 10 = 1250A).
9. GB/T 14048.2: This is likely a reference to a Chinese standard for low-voltage switchgear and controlgear, which is analogous to international standards.
10. +40°C: Specifies the temperature rating, meaning the device is rated for operation up to +40°C.
11. PUSH TO TRIP: Refers to a button or mechanism that allows the breaker to be manually tripped (opened).
12. UE ICU/LCS (V) (KA): These abbreviations are likely related to the breaker’s performance under short-circuit conditions:
    • UE: Utilization category.
    • ICU: Rated ultimate short-circuit breaking capacity.
    • LCS: Rated service short-circuit breaking capacity.
13. 400V 35/17.5kA: The breaker can handle 35 kA of short-circuit current at 400V and 17.5 kA in certain conditions.
14. 690V 8/4kA: The breaker can handle 8 kA of short-circuit current at 690V and 4 kA in certain conditions.
15. LOAD: Indicates the load side of the breaker, where the current flows to the circuit being protected.

This is likely a circuit breaker intended for high-voltage or industrial applications, following Chinese standards, with various safety and operational specifications.