The Emerson / Artesyn / Astec 73-554-0330 is a 144 W chassis-mount power supply module engineered for industrial and commercial systems requiring multiple isolated outputs with integrated protection and control. This MP4 Module range unit delivers dual-output configurations with 12 V / 15 V options and incorporates current sharing, remote sense, voltage adjustment, and module inhibit functionality across all outputs.
## Technical Specifications
**Electrical Performance**
• Power rating: 144 W
• Input voltage: 115/230 VAC, 60 Hz
• Output configurations: 4LL (V1 = 12 V at 10 A, V2 = 12 V at 4 A); 4NN (V1 = 15 V, V2 = 15 V)
• Switching frequency: 250 kHz
• Output/output isolation: > 1 MΩ
• Precharge resistor (4NN): 12 Ω
• Isolated 5 V bias voltage available
• Power factor correction included
**Protection & Control**
• Current share on outputs rated 10 A or greater
• Remote sense on outputs > 2 A
• Overload protection on all outputs
• Voltage adjustment on all outputs
• Module inhibit: TTL, isolated (singles and dual outputs)
• Global DC OK signal
• Input-OK signal with status indicator LED
**Physical & Thermal**
• Dimensions: 330 mm × 280 mm × 23 mm
• Weight: 1.2 kg
• Cooling: Forced air with field-replaceable fan
## Key Features
The module supports external output sequencing via isolated TTL module inhibit control. Global and individual enable/inhibit capability allows flexible power management in multi-module systems. Margining is available on single-output modules for precision voltage tuning. All outputs feature independent overload protection with voltage adjustment range across the load envelope.
## Compliance
The unit meets EN61000-3-2 harmonic distortion limits and CISPR22 / EN55022 Curve B conducted and radiated EMI standards. CE Mark compliance is maintained. Servicing must be performed at an Astec Authorized Service Station to preserve safety certification. System-level line disconnection and grounding provisions protect against shock hazards.
## Compatibility & Integration
The 73-554-0330 integrates into the MVP Series and MP4 Module range ecosystems, supporting multi-module configurations with shared control and inhibit signaling.
