---
type: product
schema_version: 1
stock_number: "95718-1"
canonical_url: "https://www.artisantg.com/95718-1/OMICRON-CMC-256-6"
json_url: "https://www.artisantg.com/95718-1/OMICRON-CMC-256-6.json"
generated_at: "2026-11-07T05:18:18.518Z"
last_updated: "2026-11-06T14:25:41.843-06:00"
---

# OMICRON CMC 256-6 Protective Relay Test Set

_Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._

## Summary

- Manufacturer: OMICRON
- Model: CMC 256-6
- Condition: Used and in Excellent Condition
- Price: Quote only
- Availability: Not in Stock
- Warranty: 1-Year Warranty with 30-Day Return Guarantee
- ITAR restricted: No
- Shipping weight: 50 lb, estimated
- Shipping dimensions: 20X16X14 in, estimated

## Categories

- Test Equipment > Electrical Test > Test Fixtures (primary)
- Test Equipment > Electrical Test > Relays
- Test Equipment > Electrical Test > Voltage Protectors

## Details

**Configuration**
- Voltage Generation:
    - (4) Voltage Outputs
    - 0 - 300 VAC per Phase
    - 0 - 600 VAC Single Phase
    - 4 GHz Timing Accuracy Reference
- Current Generation:
    - (6) Current Outputs
    - 0 - 12.5 A per Channel
    - 70 VA per Current Amplifier
    - Up To 37.5 A Single Phase Combination
- Auxiliary Supply:
    - 0 - 264 VDC
    - Up To 50 W Output Power
- Binary I/O:
    - (10) Binary Inputs
    - (4) Relay Outputs
    - (4) Transistor Outputs
- Options:
    - NET1: Added Ethernet Capabilities
    - EP1: Extended Precision Hardware

## Function

Generates synchronized voltage and current test signals for protective relays, with four independent voltage outputs (0–300 VAC per phase; 0–600 VAC single-phase) and six current outputs (0–12.5 A per channel; up to 37.5 A single-phase combination; 70 VA per amplifier). Provides a 0–264 VDC auxiliary supply (up to 50 W). Includes binary I/O with ten inputs, four relay outputs, and four transistor outputs for control and telemetry. Includes a timing reference with 4 GHz accuracy for precise relay testing.

## Images

- <https://www.artisantg.com/itemimages/omicron_cmc_256_6_view1_20268712436.jpg>
- <https://www.artisantg.com/itemimages/omicron_cmc_256_6_view2_20268712436.jpg>
- <https://www.artisantg.com/itemimages/omicron_cmc_256_6_view3_20268712436.jpg>
- <https://www.artisantg.com/itemimages/omicron_cmc_256_6_view4_20268712436.jpg>