White-Rodgers 5D51-90 Fan and Limit Control

The White-Rodgers 5D51-90 Fan and Limit Control is a universal Type Universal control designed to regulate fan or blower operation while serving as a high‑limit safety device. Operating from 100 to 300°F, this unit offers a broad temperature range for heating and ventilation systems. Its Open-On-Rise contact configuration ensures reliable switching, and UL/CSA approvals guarantee compliance and safety.

Designed for narrow-space installations, this compact control measures 2.9" W x 1.6" D x 4.3" H with an 8" element length, ideal where space is at a premium. It supports versatile electrical ratings: 10 A at 120 VAC, 6 A at 240 VAC (FLA), 6 A at 24 VAC, and 1 A at 0.3–12 VDC for valve and relay applications. The differential temperature rating is 15°F adjustable or 25°F fixed, allowing precise control tailored to your system.

• Universal Type design that reliably regulates fan or blower operation and acts as a high‑limit safety control.
• Wide temperature range from 100–300°F with adjustable 15°F or fixed 25°F differential.
• Open-On-Rise contact configuration for consistent switching.
• Compact, narrow-space installation with dimensions 2.9" W x 1.6" D x 4.3" H and 8" element length.
• Safety and compliance UL and CSA approvals ensure industry-standard safety.
• Flexible electrical ratings 10 A at 120 VAC, 6 A at 240 VAC, 6 A at 24 VAC, and 1 A at 0.3–12 VDC (valve/relay).