Overall and Installation Dimensions of Circuit Breaker
■ ARXM3-125C, front panel wiring (3P, 4P)
X-X, Y-Y are the center of three-pole circuit breaker
■ ARM3-125S, ARM3-125 (L,M,H), ARXM3-125S, ARM3E-125(M,H) plug-in rear panel wiring(3P, 4P)
X-X, Y-Y are the centers of three-pole circuit breaker
Plug-in type mounting plate size
Circuit breaker 125 frame size installation safety interval
■ Front panel wiring (3P, 4P)
X-X, Y-Y are the center of three-pole circuit breaker
| ARM3-125(C/S/L) |
22.5 |
0 |
106~110 |
35 |
20 |
32.5 |
57 |
| ARM3-125(M/H) |
22.5 |
87 |
106~110 |
35 |
20 |
32.5 |
57 |
| ARXM3-125S |
22.5 |
70 |
106~110 |
35 |
20 |
32.5 |
57 |
| ARXM3-125(L/M/H) |
22.5 |
87 |
106~110 |
35 |
20 |
32.5 |
57 |
| ARM3E-125(M/H) |
28.5 |
2 |
106~110 |
16 |
22 |
28 |
42 |
| ARM3ER-160(M/H) |
28.5 |
92 |
106~110 |
16 |
22 |
26.5 |
42 |
| ARM3L-125(M/H) |
28.5 |
93 |
106~110 |
16 |
22 |
28 |
50 |
| ARXM3R-160(S/L/M) |
22.5 |
70 |
106~110 |
85 |
20 |
32.5 |
57 |
■ Rear panel wiring (3P, 4P)
X-X, Y-Y are the center of three-pole circuit breaker
■ Plug-in rear panel wiring (3P, 4P)
X-X, Y-Y are the centers of three-pole circuit breaker
| ARXM3-125 |
56 |
91 |
| ARM3E-125 |
50 |
85 |
Frequently Asked Questions
Q
What are the core protection functions of this Molded Case Circuit Breaker (MCCB)?
This MCCB is designed with comprehensive overload, short circuit, and undervoltage protection functions. It effectively safeguards distribution lines and power supply equipment against damage caused by electrical faults.
Q
How are these MCCBs classified based on short-circuit breaking capacity?
According to the rated ultimate short-circuit breaking capacity, the MCCBs are classified into four main types: C (Economic Type), L (Standard Type), M (Medium Breaking Type), and H (High Breaking Type).
Q
Can this circuit breaker withstand hash environmental conditions?
Yes. The circuit breaker has passed the strict testing requirements of the GB/T2423 and IEC60947 standards. It is engineered to withstand humid air, salt mist, oil mist, and mold, making it highly reliable in industrial environments.
Q
What is the "overload alarm without tripping" function?
For the ARXM3-125~630 series 4-pole specification (neutral pole type A/B), this function alerts operators of overload conditions without cutting off the power. This ensures continuous power supply and complies with Article 6.3.6 of the GB50054 standard.
Q
What are the mechanical vibration limits that this MCCB can tolerate?
It is designed to withstand mechanical vibrations at frequencies ranging from 2Hz to 13.2Hz with a displacement of ±1mm, as well as frequencies from 13.2Hz to 100Hz with an acceleration tolerance of ±0.7g.
Q
What are the mechanical and electrical endurance ratings for the ARXM3-125?
The ARXM3-125 series features a robust mechanical design, achieving up to 8,500 operations of mechanical life and up to 1,500 operations of electrical life, ensuring long-term operational durability.
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