Laboratory power supply Voltcraft SPS 12/120 — output 12.6–14.8 V DC, max 120 A

Voltcraft SPS 12/120 is a laboratory power supply that delivers a stable DC output in the 12.6–14.8 V range with a maximum current of 120 A. Engineered for bench testing, diagnostics and development tasks that require high current at low voltage, the unit provides continuous power delivery suitable for powering devices, simulating battery conditions and performing load tests. The compact footprint and control interface are designed for workshop and service environments where reliable, adjustable output is needed.

Advantages

The Voltcraft SPS 12/120 provides high-current capability up to 120 A while maintaining stable voltage control across the specified 12.6–14.8 V range. It offers precise DC output suitable for sensitive electronics and load testing, with thermal and electrical design intended to support extended operation under heavy load. The device is built for straightforward integration into laboratory and service benches, offering clear parameter readability and robust construction for repeated use.

Suitable for

• Bench testing of automotive electronics and control units
• Battery simulation and testing of rechargeable battery packs
• Powering high-current low-voltage devices and modules during development
• Service and repair work requiring stable DC supply under load
• Functional verification and endurance testing of electronics

Key specifications

• Output voltage range: 12.6–14.8 V DC
• Maximum output current: 120 A
• Output type: regulated DC suitable for continuous operation
• Typical use environment: laboratory, workshop, service bench
• Cooling concept: designed for thermal management during high-load operation

How to use

Connect the supply to the device under test using appropriate gauge cabling and secure terminals. Set the desired output voltage within the 12.6–14.8 V range using the front-panel controls or interface, then set current limiting according to the device specifications to prevent overload. Monitor voltage and current readings during testing and adjust settings as required. When performing prolonged high-current tests, ensure adequate ventilation and observe thermal indicators or fans as provided by the unit.

Recommendations

Use sufficiently thick, low-resistance cables and secure connections to minimise voltage drop at high currents. Verify current limit settings before applying power to protect devices and wiring. Allow the unit to cool between extended high-current cycles if thermal limits are approached, and operate the supply in a ventilated area to maintain stable performance.