The Schneider DNO 022 auxiliary contact block adds switching capacity to main contactors. This unit weighs 0.06 kg and measures 4.5 cm x 4.0 cm x 3.0 cm. It provides 2 normally open (NO) auxiliary contacts on a single block. The component contains 2 silver-alloy contact tips and one spring mechanism. For energy storage, it includes no capacitor due to its purely mechanical design. Consequently, the Schneider DNO 022 requires no power supply for reliable operation.
Technical Specifications
The table below lists all verified parameters for the Schneider DNO 022. Use this data for your system integration planning.
| Parameter | Value |
|---|---|
| Manufacturer | Schneider Electric |
| Model | DNO 022 |
| Category | Auxiliary Contact Block |
| Contact Configuration | 2 normally open (NO) |
| Weight | 0.06 kg |
| Dimensions (L x W x H) | 4.5 cm x 4.0 cm x 3.0 cm |
| Onboard Components | 2 contact tips, 1 spring mechanism |
| Energy Storage | None (mechanical device) |
| Rated Insulation Voltage | 690V AC |
| Rated Thermal Current (Ith) | 10 A |
| Switching Capacity (AC-15) | 2.5 A at 230V AC |
| Switching Capacity (DC-13) | 0.5 A at 125V DC |
| Minimum Switching Load | 5V, 3 mA |
| Contact Material | Silver-alloy |
| Mechanical Durability | 10 million operations |
| Electrical Durability | 1 million operations |
| Mounting Type | Snap-on (front or side) |
| Terminal Type | Screw clamp |
| Wire Size Range | 0.5 mm² to 2.5 mm² |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -40°C to +80°C |
Contact Configuration Features
The Schneider DNO 022 provides two normally open contacts for control circuits. Each contact uses durable silver-alloy tips for long service life. Therefore, this block suits frequent switching applications perfectly. The mechanical durability reaches 10 million operations without failure. Thus, you can rely on this auxiliary contact block for years of trouble-free service.
Switching Performance
The rated thermal current reaches 10 A for continuous operation. For AC-15 loads, the Schneider DNO 022 switches 2.5 A at 230V AC. For DC-13 loads, it handles 0.5 A at 125V DC. Consequently, this block controls contactor coils, pilot lights, and small relays effectively. The minimum switching load sits at 5V and 3 mA for reliable dry circuit operation.
Installation and Mounting
You can snap the Schneider DNO 022 directly onto compatible contactors. The block mounts on either the front or side of the main device. Hence, you can position it where space permits best. The screw clamp terminals accept wire sizes from 0.5 mm² to 2.5 mm². For proper operation, tighten each screw to 0.8 Nm of torque. The Schneider DNO 022 works seamlessly with the RMS-TSG-TZ-C static trip unit.
Mechanical Design
This auxiliary contact block uses a simple spring mechanism for positive actuation. The device contains no electronic components or energy storage elements. Therefore, it remains immune to electrical noise and voltage fluctuations. The Schneider DNO 022 changes state immediately when the main contactor operates. Thus, you receive instant status feedback for your control system.
Environmental Durability
This auxiliary contact block operates reliably from -25°C to +60°C. It also withstands 95% relative humidity without condensation. The block survives vibration up to 5g from 10 to 150 Hz. Therefore, the Schneider DNO 022 suits harsh industrial environments perfectly.
Details
| Weight | 0.91 kg |
|---|---|
| Dimensions | 110 × 55 × 90 mm |
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