125-1302 (1251302) Magnetic Switch / Starter Relay

CAT 24V Starter Motor Relay / Intake Pre-heater Magnetic Switch (Universal for Excavators)

I. Core Specifications

Part Number: 125-1302 / 1251302 / CA1251302

Type: SWITCH GP-MAGNETIC / Starter Relay (Magnetic Switch / Starter Relay)

Brand: Caterpillar (CAT)

Voltage: 24V DC

Function:

Controls the high-current circuit for the starter motor

Controls power supply for the intake heater / glow plugs

Electrical safety switch for heavy-duty equipment

Interface: 2-pin connector with wiring harness (Black / Yellow)

Mounting: Dual-bolt fixation with metal bracket

Operating Conditions: Vibration-resistant, dustproof, wide temperature range (-40°C to 125°C); suitable for heavy-duty operations

II. Applicable Models (Mainstream)

Excavators

320B / 320C / 320D / 324D / 329D / 318C / 345D / 365B

E320B / E320C / E320D

Wheel Loaders

938G / 950G / 966G / 972G / 980G / 988G

Soil Compactors / Skidders

815F / 816F / 825G / 826H / 515 / 525 / 535C / 545C

Engines

3066 / 3116 / 3126 / 3406 / 3508B / 3516B

III. Replacement Models

Direct Interchange: 118-3534 (Same series; identical in appearance and function)

Compatible Alternative: 3E-7277 / 131-8396

IV. Supply Details

Quality:

✅ CAT Genuine: Original and authentic; stable performance

✅ High-Quality OEM: Manufactured to original factory standards; excellent value for money

Warranty: 6 Months

Stock: In-stock and readily available; ships within 1–3 days

MOQ: 1 piece (minimum order); bulk orders supported