Wolseley

PENN Controls Products Catalog

Issue link: https://boomart.uberflip.com/i/1442607

Contents of this Issue

Navigation

Page 11 of 367

A11 Series Low Temperature Cutout Controls Description The A11 Series Low Temperature Cutout Controls are available with single-pole, single-throw (SPST) or single-pole, double-throw (SPDT) contact action. Applications include the sensing of low temperature conditions to avoid over cooling or icing of hydronic coils, cooling coils, and liquid-handing pipes. The controls are compact and sturdy, and have an adjustable temperature setpoint range with a fixed differential. You can access the range adjustment screw at the bottom of the control, or at the top of the control when you remove the cover. A factory-set low temperature stop is available when specified. Refer to the A11 Series Low Temperature Cutout Controls Product Bulletin (LIT-125010) for additional product application information. Features • Precision repeat accuracy: the control always senses at the coldest point across the full length of the sensing element. The control remains unaffected by ambient temperature at the diaphragm cup and the 4 ft (1.2m) capillary. Install a 20 ft (6.1 m) or 40 ft (12.2 m) sensing element in the controlled area. • Trip-free manual reset provides the option to reset the lever. Press and release the lever before operation resumes. • Precision snap-acting contacts in a dust protected enclosure provides for the A11 Control to operate to the fullest potential. • Direct reading scale provides easy-to-adjust setpoint. You can make adjustments from the top or bottom of the control. A11 electrical rating Table 2: A11 Series electrical rating Description cULus Volts AC 50/60 Hz 120 208 240 Full load amperes 16 9.2 8 Lock rotor amperes 96 55.2 48 Resistive amperes 16 9.2 8 Pilot duty 125 VA, 24 VAC to 277 VAC Selection chart Table 3: Selection chart Model Description A11A SPST, open low, manual reset A11B SPST, open low, automatic recycle A11D SPDT, manual reset A11E SPDT, automatic recycle 12

Articles in this issue

Archives of this issue

view archives of Wolseley - PENN Controls Products Catalog