321-B (-DS)
Plug-In Terminal Strip
Screw connection & socket
DESCRIPTION
The plug-in terminal strip 321-B is available in 10 mm pitch with 1 to 12 poles. It has one screw connection per pole and one plug connection for a terminal strip with pins. The special moulding houses a spring-loaded terminal body with six slots and is protected against accidental contact. A funnel guides the solid male plug 321-S. This combination provides permanent annular contact. The wire protector of the “DS”-version reliably prevents damage to multi-wire flexible conductors by the turning screw. These terminals strips can be screw-mounted on a substrate.
GENERAL INFORMATION
Pitch: 10.00 mm
No. of poles: 2 - 12
Usable with: 321-S(-DS)
Application: Applications that require to easily open and close not energised circuits.
TECHNICAL DATA
Clamping Range:
without wire protector
with wire protector:
Rated cross section: 2.5 mm²
Wire stripping length: 6 mm ± 0.5 mm
Over Voltage Category
III
III
II
Pollution Severity Level
3
2
2
Rated Voltage
320 V
320 V
630 V
Rated Impulse Voltage
4 kV
4 kV
4 kV
Rated current: 16 A
Rated insulation voltage: 450 V acc. to EN 60998-1 [1]
Torque: 0.5 Nm
Other specifications: Rated values apply to use in combination with 321-S(-DS) and insulated substrates.
RATINGS
| Current [A] | Voltage [V] | Group | AWG | Torque [Nm] | |
|---|---|---|---|---|---|
 | 20 | 300 | B | 18 - 12 | 0.51 |
 | 15 | 300 | B | 26 - 10 | 0.51 [2] |
| 10 | 300 | D,E | 26 - 10 | 0.51 [2] |
TECHNICAL DRAWINGS
MATERIALS
Moulding: PA, natural, V-2
Comparative tracking index: CTI ≥ 600
Insulating group: I
Temperature range: -40°C up to 100°C
Terminal body: Nickel plated brass
Screw: M3; zinc plated steel, blue passivated
Wire protector: Tin plated tin bronze
OPTIONS / ACCESSORIES
- Marking options on the screw guides
- G30: Gold Plating (30 micro inches)
