Description
Priority switches are used in installations where existing conductor cross-sections or the size of the power supply connection do not permit simultaneous operation of two powerful consumers (e.g. storage heater and heat exchanger). Priority switches disconnect the long-term consumer (storage heater) as long as the short-term consumer (heat exchanger) is switched on. The current coil of the priority switch is connected in series with the short-term consumer. When the consumer is switched on, the contact of the priority switch disconnects e.g. the contactor of the heating system. New original ABB part, traceable to the manufacturer. Availability and price on request.
Technical Specifications
| Maximum Switching Voltage | 400 V |
|---|---|
| Rated Voltage (Ur) | 230 |
| Input Voltage Type | AC |
| Continuous Operating Current (Ic) | 43 A |
| Current Range | 6.7 … 39 A |
| Maximum Switching Power | 230 V·A ; 230 W |
| Power Loss | 2.4 W |
| Number of Contacts CO | 0 |
| Number of Contacts NC | 1 |
| Number of Contacts NO | 0 |
| Degree of Protection | IP40 |
| Ambient Temperature | – 20 … 40 °C |
| Mounting Type | DIN-Rail |
| Width in Number of Modular Spacings | 1 |
| Product Net Width | 17.5 mm |
| Product Net Height | 85 mm |
| Product Net Depth / Length | 60 mm |
| Product Net Weight | 0.089 kg |
| Built-In Depth (t2) | 60 mm |
| EAN | 4016779415903 |
| Catalog Description | E451-5,7A RELEASE RELAY |
| Delay Time (τ) | Off, Maximum, Switched Off 10 s |
| Unspsc | 39121636 |
| Object Classification Code | Q |
| Country of origin | Czechia |
| Customs tariff number | 85364900 |
| Manufacturer standard delivery time | 5 days |
| Packaging unit | Package x 10 |
| Product status (supplier data) | Active |
Independent distributor — not an authorised ABB dealer. All technical parameters are taken verbatim from the official ABB product data for this exact order code; packaging, customs and delivery data come from the supplier list entry for the same code.
