Differences between BMXDRA1605H and BMXDRA1605

Model Positioning & Core Differences

BMXDRA1605H: 16-channel relay output module of the Modicon X80 series, Harsh Environment / Hardened type. The suffix “H” stands for Hardened, designed specifically for extreme industrial environments.

BMXDRA1605: 16-channel relay output module of the Modicon X80 series, Standard type, suitable for normal industrial environments.

2. Detailed Technical Parameter Comparison

3. Application Differences

4. Selection Recommendations
5. Environment First Principle: BMXDRA1605H must be selected if operating temperature exceeds 0~60°C, or there is risk of corrosive gas, heavy dust, or mold growth.
6. Load Capacity: For loads up to 3A, the H version provides higher current margin and more reliable long‑term operation.
7. Cost Balance: The standard version (BMXDRA1605) is lower‑cost and offers sufficient performance in normal environments with better cost‑effectiveness.
8. Compatibility: Both modules are fully compatible with Modicon M340/M580 PLC systems and X80 racks. They can be directly interchanged without program modification.

Complete Model List of Modicon X80 Series BMXDRA/BMXDRC Relay Output Modules

BMXDRA1605H and BMXDRA1605 belong to the discrete relay output module portfolio of Schneider Electric Modicon X80 series. The series offers multiple configurations to meet various industrial requirements. Below is the full model list and key parameter comparison:

1. Core Model Classification & Summary

2. Detailed Technical Parameter Comparison

3. Key Features & Applications by Model

3.1 BMXDRA0805 Series (8‑channel Standard)

BMXDRA0805: Basic 8‑channel NO relay output for normal industrial environments (0°C~+60°C), e.g., solenoid valves, contactors on production lines.

BMXDRA0805H: Harsh environment hardened version, same functions as BMXDRA0805, stable at -25°C~+70°C, tested against corrosion, dust, fungi, salt spray; ideal for chemical, marine, metallurgy.

3.2 Special‑Purpose 8‑Channel Models

BMXDRA0804T: All‑climate (TC) module, dedicated for 100~150V DC systems, for industrial equipment with special power supplies.

BMXDRA0815: High‑isolation 8‑channel NO relay output with wider DC voltage range (24~125V DC), better isolation for precision equipment control.

BMXDRC0805: Only model with NO/NC (DPDT) contacts, one channel with both NO and NC; suitable for complex switching control circuits.

3.3 BMXDRA1605 Series (16‑channel Standard)

BMXDRA1605: Basic 16‑channel NO relay output, 8 groups with shared common terminals, for medium‑to‑large automation systems such as assembly lines and HVAC.

BMXDRA1605H: Harsh environment hardened version, same functions as BMXDRA1605, -25°C~+70°C wide temp, 3A rated current (higher than standard), stronger load capacity for outdoor/unconditioned panels.

4. Model Naming Convention

5. Selection Advice
6. Channel Count: Choose 8 channels for small systems, 16 channels for medium systems; mixed use improves flexibility.
7. Environmental Adaptability: H‑type hardened modules must be used if temperature exceeds 0°C~+60°C or special environmental stresses exist.
8. Contact Type: Choose DRA series (NO) for simple on/off control; choose DRC series (NO/NC) for switching control.
9. Load Characteristics:

Normal loads (≤2A): all models suitable

Heavy loads (2~3A): prefer H‑type (3A rated current)

Special voltage systems: select dedicated models with matching voltage range (e.g., BMXDRA0804T for 100~150V DC)

All models are fully compatible with Modicon M340/M580 PLC systems and X80 racks. Direct interchange is supported without program changes, facilitating system upgrade and maintenance.