187-Series Circuit Breaker - Surface Mount

Combines switching and circuit protection into a single device*
Clear, single lever operation
"Trip Free" design cannot be held "ON" during fault current condition
Waterproof
Recessed mounting holes for clean appearance
Large Clearance around terminal studs accept heavy gauge wire lugs
Robust 5/16 M8 terminals provide high torque connections
Large lever with vertical/horizontal orientation provides indication of trip status
Ignition protected - Safe for installation aboard gasoline powered boats
Meets SAE J1171 external ignition protection requirements

* Do not use as a switch where high inrush currents are expected.

Amperage: 25A – 200A

Maximum Voltage: 48V DC

Mounting: Surface Mount

Circuit Breaker Type: Thermally responsive Bi-metal blade

Terminal Stud Torque: 75 in-lb (8.47 Nm)

Interrupt Capacity : 5000A @ 14VDC; 3000A @ 28VDC; 1500A @ 48VDC

Minimum Operating Temperature: -40° C

Maximum Operating Temperature: 85° C

Case Material: Thermoset Polyester

Circuit Breaker Class: Type III - switchable/manual reset - trip free

Mounting Hole: Accept #10 (M5) Screw

Terminal Stud Size: 5/16" - 18

Weight: 0.58lb (0.26 kg)

Free shipping on orders over RM300 (West Malaysia only)
Delivery time: West Malaysia 2–5 business days · East Malaysia 3–10 business days · Singapore 5–14 business days
Processing time: Orders are processed Mon–Fri (excl. public holidays); allow 1–2 business days before dispatch
We ship to: All states in Malaysia and Singapore (international shipping not yet available)
Store pickup available at our Klang showroom — you'll be notified by email/SMS when your order is ready
Pre-order items typically take 4–6 weeks depending on supplier and customs timelines
Tracking: A tracking number is sent via email/SMS once your order ships

For full details, please refer to our Shipping Policy.

Report within 48 hours of receiving your order if the item is damaged, defective, or incorrect
Eligible returns: Item must be unused, in original packaging, with photo/video evidence provided
Not eligible: Pre-order items, misuse/negligence damage, and clearance/sale items (unless defective)
Refunds: Issued as store credit by default (or original payment method); processed in 7–14 business days after inspection
Exchanges: Available for defective or incorrect items, subject to stock availability
Return shipping is the customer's responsibility — use a trackable courier
To start a return, contact us with your order number and photos: info@boatyardmalaysia.com / +60 19-201 8832

For full details, please refer to our Return & Refund Policy.

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