Honeywell 05701-A-0293

Description

Actuator Type: Side-Roller Lever with 2″ (50.8 mm) Roller
Lever Length: 2.125″ (54 mm) from pivot to roller center
Roller Diameter: 0.5″ (12.7 mm)
Overtravel: 17° positive / 2° negative from switch point
Operating Force: 1.5 lbs (6.7 N) max at roller
Release Force: 0.3 lbs (1.3 N) min at roller
Operating Speed: 0.1 to 10 inches per second (2.5 to 254 mm/s)

Operating Temperature Range: -40°C to +85°C (-40°F to +185°F)
Storage Temperature Range: -50°C to +90°C (-58°F to +194°F)
Ingress Protection: IP67 when mated with a suitable cover; IP66 rated body
Enclosure Rating: NEMA 4, 4X, 12, 13
Vibration: 10–500 Hz, 10 g (operating); 10–500 Hz, 20 g (survival)
Shock: 50 g, 11 ms half-sine

Housing Material: Zinc die-cast alloy with epoxy-polyester powder coat finish (green standard)
Internal Contact Material: Silver alloy (AgSnO₂) for high-current switching
Terminals: Brass alloy, tin-plated
Roller: Stainless steel 304
Lever Arm: Steel, nickel-plated
Seals: Silicone rubber (standard); FKM (Viton) available as option
Mounting Hardware: Stainless steel 304 screws included

Structure:

• Compact rectangular body (approximately 2.25″ × 1.75″ × 1.5″ / 57 mm × 44 mm × 38 mm)
• Side-mounted roller lever with adjustable pivot point
• Cable entry: 1/2″ NPT conduit fittings (top and bottom)
• Prewired leads: 18 AWG, 6″ (152 mm) long, color-coded (red, black, white)
• Terminal type: Quick-connect spade terminals (0.250″ / 6.35 mm)
• Weight: Approximately 0.45 lbs (0.20 kg)

Working Principle:
The switch contains an internal snap-action mechanism with a spring-loaded contact assembly. When the external roller lever is actuated by a machine part, the lever rotates the internal cam. At the switch point, the cam releases the stored spring energy, causing the contacts to snap rapidly from one position to the other. This snap action ensures fast, clean contact transition regardless of actuator speed (within specified range). The positive overtravel ensures complete contact closure even if the actuator continues moving past the switch point.

Key Features:

• Heavy-duty 15 A contact rating — handles high inductive and resistive loads
• Side-roller lever actuator — resists side loads and misalignment
• Adjustable switch point — pivot position can be moved to set the actuation point
• IP67 environmental sealing — resistant to water, dust, and washdown
• 10 million cycle mechanical life — extremely long service life
• Quick-connect terminals — fast wiring, no tools required
• NEMA 4X / IP67 — suitable for outdoor and washdown environments

Advantages:

• Fast snap-action (less than 1 ms contact transition) prevents arcing and contact welding
• High contact rating (15 A) eliminates need for relay interposing in many applications
• Adjustable actuation point allows field tuning without replacing the switch
• Robust construction withstands vibration, shock, and harsh chemicals
• Long mechanical life (10M cycles) reduces maintenance frequency and downtime
• Side-roller design provides superior resistance to lateral forces compared to plunger types

Applicable Industries:

• Manufacturing / Machine Tools — end-of-travel detection, safety interlocks on CNC machines, presses, and stamping equipment
• Material Handling — conveyor position sensing, hoist limit detection, crane travel limits
• Food & Beverage — washdown-rated positions on packaging and bottling lines
• Mining & Heavy Equipment — boom and bucket position limits on excavators and loaders
• Power Generation — valve position feedback, turbine governor limits
• Automotive — assembly line position sensing, robotic cell interlocks
• Oil & Gas — valve actuation feedback, pump control interlocks

Model Series:

Contact Configuration:

Installation Requirements:

• Mount the switch on a rigid, vibration-free surface using the provided mounting holes
• Align the roller lever so that the machine part contacts the roller perpendicular to the lever arm at the desired switch point
• Set the actuation point by adjusting the lever pivot position before final tightening
• Use 1/2″ NPT conduit for cable entry; seal unused entries with provided plugs
• Connect wires to quick-connect terminals; ensure connections are tight to prevent arcing
• Provide a dedicated ground connection if the switch is used in a safety circuit
• Maintain a minimum 1″ (25 mm) clearance around the lever for free movement

Usage Precautions:

• Do not exceed the rated contact current of 15 A — overloading will weld contacts and destroy the switch
• Do not operate the switch without the roller in contact with the actuating surface — free lever movement causes premature wear
• Do not apply side loads greater than 5 lbs (22 N) to the roller — this will bend the lever arm
• Do not disassemble the switch in hazardous (classified) areas unless the unit carries the appropriate certification
• Verify contact configuration (NO/NC) matches the control circuit before energizing
• Perform periodic inspection of the roller and lever for wear, cracks, or corrosion
• Replace the switch if the roller shows flat spots, the lever is bent, or contacts show pitting or welding
• Do not use in temperatures below -40°C or above +85°C — seal integrity and contact performance are not guaranteed

Certifications:

• UL Listed (File E29549)
• CSA Certified (File LR42403)
• CE Marked (Low Voltage Directive 2014/35/EU, EMC Directive 2014/30/EU)
• RoHS Compliant
• IP67 (IEC 60529)
• NEMA 4, 4X, 12, 13 (UL 50 / NEMA 250)

Documentation Reference:

• Honeywell Micro Switch Heavy-Duty Snap-Action Catalog (Document 5000-001)
• Honeywell 05701 Series Installation Manual (Document 50701-IM-001)
• Honeywell Limit Switch Selection Guide (Document 5000-SG-001)

Replacement Parts: