Cooling thermostat Alpha RA 12

laboratorybenchtopcompact

Product overview
The LAUDA Alpha RA 12 is a compact thermostatic bath/circulator designed for laboratory tempering between -25 and 100 °C. Supplied with standard bath cover and pump connections, it supports internal and external circulation with non‑flammable liquids. Automatic compressor control improves compressor lifetime and reduces operating costs.

Features

• Thermostatic bath/circulator with integrated cooling system and simple 3-key operation
• Fully electronic continuous controller with 1-line LED display (actual or set temperature)
• Circulating pump with flow reduction and rear outlet connection
• Stainless steel bath with supplied bath cover
• Acoustic and visual alarms; low-level and overtemperature protection (for non‑flammable liquids)
• Condenser cooled by air
• Compressor automatic for intelligent energy saving
• Uses traditional HFC refrigerants in accordance with EU F‑gas regulation (EU) 573/2024

Working range

• Min. working temperature: -25 °C
• Max. working temperature: 100 °C
• Temperature stability: 0.05 ± K

Technical data (according to DIN 12876)

• Working temperature range: -25 … 100 °C
• Ambient temperature range: 5 … 40 °C
• Temperature stability: 0.05 ± K
• Heater power max.: 1.15 kW
• Max. power consumption: 1.5 kW
• Current consumption: 13 A
• Max. discharge pressure: 0.2 bar
• Max. pump flow: 15 L/min
• Bath volume (min / max): 9.5 / 14.5 L
• Dimensions (W × D × H): 365 × 500 × 605 mm
• Weight: 37 kg
• Power supply / plug: 115 V; 60 Hz / NEMA 5-15P

Cooling capacity (60 Hz)

• 20 °C (Ethanol): 0.325 kW
• 0 °C (Ethanol): 0.26 kW
• -20 °C (Ethanol): 0.08 kW

Downloads (examples)
Data sheet Alpha RA 12 (PDF available)

Key specifications

• Operating temperature range: -25 … 100 °C
• Temperature stability: 0.05 ± K
• Bath volume (min / max): 9.5 / 14.5 L
• Max. pump flow: 15 L/min
• Dimensions (W × D × H): 365 × 500 × 605 mm