# Končar Proza Net Substation Bay Control & Protection Unit

> bay-control - Substation bay control, interlocking, synchrocheck, breaker supervision and integrated feeder overcurrent protection for utility and industrial switchgear

**Voltformer canonical:** https://voltformer.com/product/koncar-proza-net-bay-control-protection-unit - markdown version: https://voltformer.com/product/koncar-proza-net-bay-control-protection-unit.md

## Overview

- **Brand:** Končar D&ST
- **Product family:** Proza Series
- **Application:** Substation bay control, interlocking, synchrocheck, breaker supervision and integrated feeder overcurrent protection for utility and industrial switchgear
- **Product type:** bay-control

## Protection & Control Functions

- **ANSI Functions:** 50/51, 50N/51N, 50BF, 25, 27/59, 81, 79
- **Transformer Windings:** N/A (Feeder / Bay)
- **Supports Transformer:** No
- **Supports Feeder:** Yes
- **Supports Breaker Control:** Yes
- **Arc Flash Protection:** No

## Digital Integration & Protocols

- **IEC 61850 Edition:** Ed2
- **GOOSE:** Yes
- **Sampled Values (SV):** Yes
- **Redundancy (PRP/HSR):** Yes (PRP/HSR)
- **Protocols:** IEC 61850, IEC 60870-5-104, Modbus TCP, DNP3
- **Engineering Software:** Proza Tools

## Electrical Interface

- **Frequency:** 50/60 Hz
- **Nominal Current:** 1 A / 5 A
- **Auxiliary Supply:** 48-250 Vdc / 100-240 Vac
- **Operating Temperature:** -40 to +70 °C

## Standards

- IEC 60255
- IEC 61850
- EN 50588

## Sources

- https://www.koncar-dst.hr

- **Source scope:** manufacturer-family
- **Last reviewed:** 2026-09-13

Manufacturer portfolio/family source. Confirm the exact order code, guaranteed ratings and project-specific options against the current OEM datasheet before procurement or an SLD study.

Technical ratings are configuration-dependent where stated by the manufacturer. Request project-specific verification before procurement.