Model 340: 12-Volt Sealed 30/40-Amp SPDT Standard Automotive Relay

  • Sealed 40 - amp, 5 - post, SPDT Relay (12 - volt) - Kleinn Automotive Accessories - KL 340

KL 340

$6.49
$6.49 $6.49

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PROP 65 WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

MODEL 340: 12-VOLT SEALED 40-AMP SPDT RELAY

HEAVY-DUTY ELECTRICAL MANAGEMENT

Safeguard your onboard air infrastructure and optimize high-amperage switching circuits with the premium Kleinn Model 340 Electrical Relay. At the core of this heavy-duty control module is an industrial-tier 12-volt, 30/40-amp Single Pole Double Throw (SPDT) configuration designed to handle high current spikes from heavy automotive compressors and electronic solenoid horns. Engineered to safely isolate your cabin control toggles from heavy direct battery currents, this vital safety component stabilizes voltage lines to preserve high-flow pneumatic accessory cycles.

SEALED PROTECTION FOR ROUGH TRAILS

Unlike standard unsealed automotive relays that quickly short out when exposed to engine bay steam, road grime, or trail water, the Model 340 features a fully sealed protective casing. This weatherproof construction seals the internal contact pins from moisture penetration and atmospheric degradation, ensuring a reliable, spark-free mechanical link. Its versatile 5-post architecture facilitates clean terminal assignments for complex pneumatic loops or automated auxiliary wiring tracks.

Why Choose the Model 340 Relay?

  • Weatherproof Sealed Shell: High-durometer external housing blocks dust fields, mud spray, and moisture, protecting critical contacts in exposed chassis runs.
  • 40-Amp Power Threshold: Handles heavy high-amp load currents up to 40 amps to ensure clean, continuous current delivery to demanding compressor motors.
  • 5-Post SPDT Flexibility: Single Pole Double Throw framework provides both Normally Open (NO) and Normally Closed (NC) wiring paths for maximum utility.
  • Switch Isolation Security: Safely triggers high-draw components using minimal dashboard switch amperage, extending the life of cockpit electronics.

THE VERDICT: The definitive heavy-duty upgrade to prevent electrical failures on the trail. The Model 340 packs absolute element isolation and a robust 40-amp threshold into a rugged, compact footprint built to handle severe under-hood environments.

What's in the Box?

  • Electrical Component: One (1) Model 340 12-Volt, 40-Amp fully sealed 5-post SPDT electrical relay.

PRODUCT SPECIFICATIONS

Feature Details
Part Number 340
Operating Input Voltage 12-Volt DC
Continuous/Maximum Current 30/40 Amps
Switch Configuration Single Pole Double Throw (SPDT)
Terminal Interface 5-Post Blade Pins
Environmental Shielding Fully Sealed Moisture and Dust Resistant Enclosure
Primary Application Air Compressors, Electronic Solenoids, Tankless Horn Kits

MANUFACTURER INSTRUCTION LINKS

Model 340: 12-Volt Sealed 30/40-Amp SPDT Standard Automotive Relay

$6.49

Does it come with a warranty?

Kleinn Automotive Accessories Limited Warranty

Kleinn Automotive Accessories stands behind the quality and craftsmanship of our products. Our products are covered against defects in materials and workmanship when properly installed and used under normal operating conditions, subject to the terms below.

One-Year Limited Warranty

Unless otherwise specified, Kleinn Automotive Accessories products are covered by a 1-year limited warranty from the original date of purchase.

This warranty applies to the original purchaser and covers defects in materials and workmanship under normal use.

If a product is determined to have a covered warranty defect, Kleinn Automotive Accessories will, at its discretion, repair or replace the defective product or component.

What Is Not Covered

This warranty does not cover damage or failure resulting from:

  • Improper installation
  • Misuse, abuse, or improper operation
  • Use outside the product's intended application or specifications
  • Modification or alteration of the product
  • Accidents or physical damage
  • Electrical damage
  • Environmental damage or exposure
  • Normal wear and tear

Kleinn Automotive Accessories is not responsible for installation or removal charges, diagnostic fees, labor costs, vehicle downtime, loss of use, or other incidental or consequential expenses associated with warranty service.

Warranty Claims

To request warranty service, email warranty@kleinn.com with the following information:

  • A copy of your original sales receipt or proof of purchase
  • Your full name
  • Email address
  • Telephone number
  • A brief description of the issue

A Kleinn representative will review your claim and may first attempt to resolve the issue through technical support.

If the product needs to be returned for inspection, Kleinn will provide a Return Authorization (RA) number and return instructions. Products should not be returned without prior authorization.

Once received, the product will be inspected to determine whether the issue is covered under warranty. If a covered defect in materials or workmanship is confirmed, Kleinn will, at its discretion, repair or replace the defective product or component.

If inspection determines that the product does not have a covered warranty defect, the product may be returned to the customer, and the customer will be responsible for applicable return shipping costs.

This limited warranty gives you specific legal rights. You may also have other rights, which vary from state to state.

Kleinn Automotive Accessories
4045 N. Highway Drive, Tucson, AZ 85705
Tel (520) 579-1531

What's the returns policy?

How To Return An Item

Your item must be in its original unused condition to be returned, unless there is a manufacturer defect. You must return the item within 30 days of your purchase.

1. Please email support@kleinn.com to request a refund and we will assign you a Return Authorization #.

2. Mail your returned item to:
Kleinn Automotive Accessories
Returns Department
4045 N Highway Drive
Tucson, AZ 85705

3. Include in your package a signed letter stating the reason for your return and the original receipt.

Return Non-Exceptions

Merchandise that has been worn, used, or altered will not be accepted for return or exchange.

Restocking Fee

All returns are subject to a 15% restocking fee, which will be deducted from your refund. If shipping and handling fees were applied to your order, they are non-refundable.

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