Steatite connection blocks, 250V range With pressure screws, protected against electric shock
These high-quality and small foot-print terminal blocks allow efficient and easy wiring of halogen lamps, heating elements, infrared heaters and quartz tube heaters. Because of their construction, they are non-flammable and resistant to temperature and humidity without losing their electrical and insulating characteristics.
| Raw material | |
|---|---|
| Voltage | |
| Ways | |
| Conductor cross-sections (mm²) | |
| Max operating temperature (°C) | |
| Max peak temperature (°C) |
Applications: These high-quality and small foot-print terminal blocks allow efficient and easy wiring of halogen lamps, heating elements, infrared heaters and quartz tube heaters. Because of their construction, they are non-flammable and resistant to temperature and humidity without losing their electrical and insulating characteristics.
They are built according to the specifications of IEC 60998-1 and IEC 60998-2, for a maximum voltage of 250V.
Ceramic: Steatite type C221, unglazed, slightly creamy color.
Typical insulation between two terminals (500V measuring voltage):
- at 20°C (70°F): 300 MΩ
- at 100°C (212°F): 150 MΩ
- at 200°C (390°F): 110 MΩ
- at 300°C (570°F): 90 MΩ
- at 400°C (750°F): 60 MΩ
The insulation values with respect to the earth are approximately 2 times greater. The EN 60998 standard imposes an insulation resistance greater than 5 MΩ. Their insulating characteristics are therefore about 10 to 12 times higher, including at 400°C (750°F).
Dielectric strength: higher than 3000V. Minimum distance through ceramic insulation between 2 terminals: 1.2mm.
Screw: Galvanized steel 4.8, reduced diameter slotted cylindrical head, according to DIN 920
Terminals: CuZn40Pb2 brass, high mechanical strength. Models with nickel plated brass terminals are available on request (MOQ apply)
Maximum operating voltage: 250V, in pollution class 3. (Pollution class 3 defines micro-environmental conditions causing conductive pollution or non-conductive pollution that may become conductive if condensation can occur).
Clearances and creepage distances: ≥ 3mm between mounting face and terminals, between terminals, and between two connection blocks mounted side by side.
Live parts: Protected against accidental electrical contact (Standard Finger Type A according to IEC 61032).
Mounting: With the exception of the single-wire terminals, the terminal blocks have one or two holes for installing them with a screw on a wall or a board. A hexagonal recess makes it possible to place a round-headed or hexagonal-headed screw, or a nut. This allows mounting with clamping by the front or the back.
Maximum ambient temperature:
- Permanent: 230°C / 450°F
- Peak (duration <90 minutes): 450°C / 840°F
The temperature resistance values of the brass connectors were validated by pull tests of the wires according to EN 60998, carried out after 48H at 230°C (450°F) or 90 minutes at 450°C (840°F).
Applicable standards: (IEC) EN 60998-1; (IEC) EN 60998-2-1
Attention: Special care must be taken to avoid reducing the insulation and safety distances from electric shock during installation: avoid the use of inappropriate mounting screws, respect wire stripping lengths and insert wires inside the terminal until the insulation comes into contact with the brass.
Acceptable conductor cross section:
| 4 mm² (BA041, BA042, BA043, BA044) | |
| Solid conductor | 4mm²/2.5mm²/1.5mm²/AWG12/AWG14/AWG16 |
| Stranded conductor | 4mm²/2.5mm²/1.5mm²/AWG12/AWG14/AWG16 |
| Screw thread | M2.6 |
| Tightening torque | 0.4 N.m |
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