F261 Series flow switches technical specifications - PENN Controls - F261KEH - F261KFH - F261MEH - F261MFH - Flow, Liquid Level, and Air‐Volume Control - F261 Fluid Flow Switch

F261 Series Flow Switches Installation Guide

Product name
F261 Fluid Flow Switch
Document type
Installation Guide
Document revision
Revision date
Table 1. UL conformity declaration information
Information Description
Purpose of control Operating liquid flow switch, automatic action
Construction of control Electronic independently mounted control
Number of cycles 100,000 cycles
Method of mounting control Mounting to sensed media vessel/orientation
Type 1 or Type 2 action Type 1.C (Microinterruption)
External pollution situation Pollution degree 4
Internal pollution situation Pollution degree 2
Rated impulse voltage 4,000 VAC
Ball pressure temperature

Enclosure: 266°F (130°C )

Switch component: 252°F (122°C)

Control adjustment instruction -
Field wiring rating

Wire/cord temperature ratings:

  • 140°F (60°C) only permitted when ambient air and media are less than 113°F (45°C)
  • 167°F (75°C) only permitted when ambient air and media are less than 140°F (60°C)
  • 194°F (90°C) only permitted when ambient air is less than 140°F (60°C) and media is less than 167°F (75°C)
  • 302°F (150°C) permitted when ambient air is less than 140°F (60°C) and media is less than 249°F (121°C)
Vessel pressure F261 Fluid Flow Switch: 290 psi (20 bar)
Table 2. F261 Series fluid flow switches technical specifications
Specification Description
Switch single-pole, double-throw (SPDT)
Enclosure UL: Type 3R or Type 4

CE: IP43 (IP23 with drain hole plug removed) or IP67

Wiring connections Three color-coded screw terminals and one ground terminal
Conduit connection One 7/8 in. (22 mm) hole for 1/2 in. trade size (or PG16) conduit
Pipe connector Standard: 1 in. 11-1/2 NPT Threads

Low-Flow: 1/2 in. x 1/2 in. Female NPTF; 3/4 in. x 3/4 in. Female NPTF

Maximum fluid pressure 290 psi (20 bar)
Minimum fluid temperature

-20°F (-29°C)

Note: Ensure that the low liquid temperature combined with the low ambient temperature does not lead to freezing the liquid inside the body or, if applicable, the bellows. Observe the liquid freezing point.
Maximum fluid temperature

250°F (121°C)

Note: At higher ambient temperatures, the maximum liquid temperature becomes lower. The temperature of the electrical switch inside should not exceed 158°F (70°C).
Ambient conditions -40°F to 140°F (-40°C to 60°C)

North America: cULus Listed; UL 60730, File E6688; FCC Compliant to CFR47, Part 15, Subpart B, Class B

Industry Canada (IC) Compliant to Canadian ICES-003, Class B limits

Europe: CE Mark – Johnson Controls declares that this product is in compliance with the essential requirements and other relevant provisions of the EMC Directive and the Low Voltage Directive.
  Australia/New Zealand: Mark: RCM Compliant

The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications, consult Johnson Controls/Penn Refrigeration Application Engineering at 1-800-275-5676. Johnson Controls shall not be liable for damages resulting from misapplication or misuse of its products.