Product description in English:

The SRB301HC/T-24V safety relay is a powerful and reliable solution for safety-critical applications such as monitoring protective devices, emergency stop buttons, or safety mats. Featuring various safety functions, including wire break, cross-circuit, and ground fault detection, it meets the highest safety standards.

The housing, made of fiberglass-reinforced thermoplastic, is robust and ensures long-lasting durability. The relay includes three safety contacts (normally open), one auxiliary contact (normally closed), and an integrated status display with four LEDs. It achieves a performance level of up to PL e and safety category 4, making it suitable for demanding safety applications.

Easy installation is supported by quick mounting on DIN rails and removable screw terminals. The relay operates on a 24 VAC/VDC power supply and is compatible with a wide range of safety devices and switches.

Technical specifications:

Ordering information:

• Product designation: SRB301HC/T-24V
• Article number: 101190593
• Replaces article number: 101193478
• EAN: 4250116202331
• Note: Discontinued product
• eCl@ss number: 27-37-18-19
• ETIM number: EC001449

Approvals and standards:

• Certifications: TÜV, cULus, TILVA
• Standards: EN IEC 62061, EN ISO 13849-1, EN IEC 60947-5-1

Mechanical specifications:

• Material: Fiberglass-reinforced thermoplastic
• Dimensions: Width 45 mm, Height 100 mm, Depth 121 mm
• Protection ratings: IP40 (housing), IP54 (installation space), IP20 (terminals)

Electrical specifications:

• Operating voltage: 24 VAC -15 % / +10 % or 24 VDC -10 % / +20 %
• Thermal continuous current: 4 A
• Safety contacts: 3 normally open (max. 6 A at 230 VAC, 6 A at 24 VDC)
• Auxiliary contact: 1 normally closed (max. 2 A at 24 VDC)
• Power consumption: 1.6 W / 3.7 VA
• Switching frequency: max. 1,200 operations/h

Safety considerations:

• Stop category: 0
• Performance Level: PL e (Stop 0)
• Category: 4
• SIL: SIL 3
• Service life: 20 years
• PFH value: 2.00 x 10⁻⁸ /h

Environmental conditions:

• Operating temperature: -25 °C to +60 °C
• Storage and transport temperature: -40 °C to +85 °C
• Vibration resistance: 10–55 Hz, amplitude 0.35 mm
• Shock resistance: 30 g / 11 ms

Special features:

• Integrated electronic fuse
• Removable terminals
• Cross-circuit, wire break, and ground fault detection