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The Potter & Brumfield KRPA-14AN-120 (manufactured by TE Connectivity, part number 7-1393104-3) is an industry-standard, general-purpose electromechanical panel plug-in power relay. Known colloquially as an "ice cube" or "octal" relay, it features an 11-pin circular plug configuration and an integrated neon indicator lamp.

Core Specifications

Contact Configuration: 3PDT (3 Form C, Double Throw)
Contact Current Rating: 10 A (at rated voltages)
Max Switching Voltage: 240 VAC
Max Switching Load: 2,400 VA
Coil Voltage Nom: 120 VAC (50/60 Hz)
Termination Style: 11-Pin Octal Plug

Coil Data

Coil Type: Monostable AC, Non-Latching
Coil Resistance: 2,250 Ohms (2.25 kΩ) ±10%
Nom Operating Power: 2.1 VA
Coil Current Rating: 17.5 mA
Must Operate Voltage: 102 VAC
Coil Insulation: Class B (130°C)

Contact & Electrical Performance

Contact Material: Silver Cadmium Oxide (AgCdO)
Min Switching Load: 300mA @ 12V
Initial Dielectric Strength: 1,000 Vrms between open, adjacent, and coil-to-contact points
Initial Insulation Resistance: 1,000 MΩ
Expected Mechanical Life: 10,000,000 operations minimum
Expected Electrical Life: 100,000 operations minimum at full rated load

Physical & Environmental Attributes

Enclosure Type: Clear polycarbonate dust cover (RT I rating)
Operating Temperature: -45°C to +55°C (-49°F to +131°F)
Dimensions: 50.8 mm Height × 35.71 mm Width × 35.71 mm Depth
Weight: ~85 g (2.98 oz)
Mounting Options: Mates with 11-pin octal sockets (such as DIN-rail socket 27E892).
Safety Approvals: UL Recognized (File E22575), CSA Certified.

Part Number Breakdown

KRPA: Enclosed relay type featuring octal-style plug termination.
14: Represents a 3 Form C (3PDT) contact configuration.
A: Indicates an AC input coil.
N: Designates Silver Cadmium Oxide (AgCdO) contacts paired with a built-in neon indicator lamp.
120: Specifies the nominal 120VAC control coil voltage

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Condition:

* Surplus open pre-owned; may show some cosmetic wear or scratches, but it is fully operational and functions as intended.

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