The figure shows version TT-UKK5-D-24 DC
Official DistributorSKU
MPN
TT-UKK5-D/ 24AC
Weight
0.025 kg
Series TT-UKK5
TT-UKK5-D/ 24AC - Surge protection device
Double-level modular terminal block with suppressor diode as surge protection between both levels, nominal voltage: 24 V AC, for mounting on NS 32 or NS 35/7.5, closed housing, terminal width: 6.2 mm, terminal height: 68 mm
Technical Specifications
Product properties
| IEC test classification | C3 |
| VDE requirement class | C3 |
| Type | Double-level terminal block |
| Surge protection fault message | none |
| Wire pairs per module | 1 |
Electrical properties
| Nominal voltage UN | 24 V AC |
Connection data
| Connection Method | Screw connection |
| Screw thread | M3 |
| Tightening torque, min | 0.5 Nm |
| Conductor cross section flexible min. | 0.2 mm² |
| Conductor cross section flexible max. | 4 mm² |
| Conductor cross section, rigid min. | 0.2 mm² |
| Conductor cross section, rigid max. | 4 mm² |
Dimensions
| Width | 6.2 mm |
| Height | 68 mm |
| Length | 80 mm |
Material specifications
| Flammability rating according to UL 94 | V2 |
| Housing Material | PA |
Mechanical data
| Open side panel | No |
Protective circuit
| Direction of action | Line-Line |
| Maximum continuous voltage UC | 40 V DC |
| Maximum continuous voltage UC | 28 V AC |
| Maximum continuous voltage UC (line-line) | 40 V DC |
| Maximum continuous voltage UC (line-line) | 28 V AC |
| Operating effective current IC at UC | ≤ 5 A |
| Nominal discharge current In (8/20) µs (line-line) | 119 A |
| Total surge current (8/20) µs | 119 A |
| Max. discharge current Imax (8/20) µs maximum (line-line) | 119 A |
| Nominal pulse current Ian (10/1000) µs (line-line) | 23.2 A |
| Output voltage limitation at 1 kV/µs (line-line) spike | ≤ 62 V |
| Output voltage limitation at 1 kV/µs (line-line) static | ≤ 58 V |
| Residual voltage at In (conductor-conductor) | ≤ 84 V |
| Response time tA (line-line) | ≤ 1 ns |
| Cut-off frequency fg (3 dB), sym. in 150 Ω system | typ. 1.6 MHz |
| Capacity (core-core) | ≤ 1.1 nF (typical) |
| Surge protection fault message | none |
| Impulse durability (line-line) | C3 - 10 A |
Ambient conditions
| Degree of Protection | IP20 |
| Ambient Temperature (Operation) | -40 °C ... 85 °C |
Standards and Regulations
| VDE requirement class | C3 |
Air clearances and creepage distances
| Standards/regulations | VDE 0110-1 |
Standards Information technology specification
| Standards/regulations | IEC 61643-21 |
| Standards/regulations | IEC 61643-21 |
Mounting
| Mounting Type | DIN rail: 35 mm |
Why Proax for Phoenix Contact 2788155?
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Additional Information
| Pack Size | 50 |
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