* Pictures are placed for illustration purpose only. Appearance of real component may differ.
Circuit-breaker assembly for protection of three-phase circuits from current overloads (time and value)
Simultaneously, AZ3 is a three-pole switch.
Technical parameters
| Rated current, A AZ3-2...50 A AZ3K-75 A AZ3K-100 A | 2; 3; 4; 5; 7.5; 10; 15; 20; 25; 30; 40; 50 75 100 |
| Thermal cut-off current multiplicator AZ3-2...50 A AZ3-75 A, AZ3-100 A | 1.5 1.4 |
| Thermal cut-off time at +60 oC, min AZ3-2...50 A AZ3-75 A, AZ3-100 A | not more than 30 not more than 15 |
| Electromagnetic cut-off current multiplicator AZ3-2...50 A AZ3-75 A, AZ3-100 A | 10..20 9..14 |
| Warranty, years AZ3-2...50 A AZ3-75 A, AZ3-100 A | 8 6 |
| AC parameters rated linear voltage, V rated phase voltage, V frequency, Hz cos Ø | 187..207 108..119 400±40 not less than 0.5 |
| Electromagnetic cut-off time, ms | 10 |
| Dimensions, mm AZ3-2....50 A AZ3-75 A, AZ3-100 A | 94.5x59x33 118x91x35 |
| Mass, g AZ3-2....50 A AZ3-75 A, AZ3-100 A | not more than 280 not more than 600 |
Operational limits
| Ambient air temperature, oC | -60..+60 |
| Relative humidity at +40 oC | 98% |
| Vibratory loads frequency, Hz acceleration, g amplitude, mm | 5...300 not more than 5 not more than 1 |
Transportation allowed by all means of transport
Device is dust-proof and moisture-proof.
The assembly consists of an upper and a lower unit, lever and the cover with 3 self-locking nuts.
Lower unit includes the plastic case, bus bar with static contacts, adjustment nodes and bimetallic cut-offs,
plus electromagnetic cut-offs for 20 A – 100 A switches. General dust- and moisture-proofing is provided by a seal assembly and a rubber filler.
