Nanjing KJT Electric Co,.LTD
Datasheet excerpt: Technical data of NBB20-U4-UU
| General specifications | ||
|---|---|---|
| Switching function | Normally open/closed (NO/NC) | |
| Output type | Two-wire | |
| Rated operating distance | 20 mm | |
| Installation | flush | |
| Output polarity | AC/DC | |
| Assured operating distance | 0 ... 16.2 mm | |
| Actual operating distance | 18 ... 22 mm | |
| Reduction factor rAl | 0.4 | |
| Reduction factor rCu | 0.3 | |
| Reduction factor r304 | 0.77 | |
| Reduction factor rFe | 1 | |
| Reduction factor rBrass | 0.43 | |
| Output type | 2-wire | |
| Nominal ratings | ||
| Switching frequency |
AC, 0 ... 30 Hz DC, 0 ... 100 Hz |
|
| Hysteresis | 1 ... 10 typ. 5 % | |
| Reverse polarity protection | reverse polarity tolerant | |
| Short-circuit protection | pulsing | |
| Voltage drop |
≤ 5 V (typ. 2V) DC operation ≤ 8 V (typ. 3 V) AC operation |
|
|
Momentary current (20 ms, 0.1 Hz) |
0 ... 3000 mA | |
| Operating current | 5 ... 500 mA | |
| Rated operating current | 500 mA 50/60 Hz | |
| Lowest operating current | 5 mA | |
| Off-state current | ≤ 1.5 mA | |
| Usage category | AC12 , AC140 , DC12 , DC13 | |
| Time delay before availability | ≤ 300 ms | |
| Operating voltage indicator | LED, green | |
| Switching state indicator | LED, yellow | |
| Error indicator | flashes when overcurrent | |
| Functional safety related parameters | ||
| MTTFd | 540 a | |
| Mission Time (TM) | 20 a | |
| Diagnostic Coverage (DC) | 0 % | |
| Electrical specifications | ||
| Rated operating voltage | 24 ... 250 V DC / 24 ... 230 V AC | |
| Operating voltage | 20 ... 275 V DC / 20 ... 253 V AC | |
| Compliance with standards and directives | ||
| Standard conformity | ||
| Standards | EN IEC 60947-5-2 | |
| Approvals and certificates | ||
| Protection class | I | |
| Rated insulation voltage | 250 V | |
| Rated impulse withstand voltage | 2.5 kV | |
| UL approval | cULus Listed, General Purpose | |
| CCC approval | Ue 75VDC - 250VDC Ue 75VAC - 230VAC | |
| Ambient conditions | ||
| Ambient temperature | -25 ... 85 °C (-13 ... 185 °F) | |
| Storage temperature | -25 ... 85 °C (-13 ... 185 °F) | |
| Pollution degree | 3 | |
| Mechanical specifications | ||
| Connection type | terminal compartment | |
| Information for connection |
A maximum of two conductors with the same core cross section may be mounted on one terminal connection! tightening torque 1.2 Nm + 10 % |
|
| Core cross section | up to 2.5 mm2 | |
| Minimum core cross-section | without wire end ferrules 0.5 mm2 , with connector sleeves 0.34 mm2 | |
| Maximum core cross-section | without wire end ferrules 2.5 mm2 , with connector sleeves 1.5 mm2 | |
| Housing material | PA 6.6 / metal | |
| Sensing face | PA 6.6 | |
| Housing base | metal / class I equipment with ground connection | |
| Degree of protection | IP67 | |
| Mass | 280 g | |
| Dimensions | ||
| Height | 40 mm | |
| Width | 40 mm | |
| Length | 118 mm | |
| Note | Tightening torque: 1.8 Nm (housing) | |
