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EATON CUTLER HAMMER C306DN3B NEMA Thermal Overload Relay - NEMA Thermal Overload Relays
EATON CUTLER HAMMERNEMA Thermal Overload Relays

EATON CUTLER HAMMER C306DN3B NEMA Thermal Overload Relay

The EATON CUTLER HAMMER Overload Relay: Thermal Protection (MPN C306DN3B) is a three-phase NEMA thermal overload relay with a maximum voltage rating of 600V AC. It is designed for NEMA Size 0/00 and supports a…

SKU 3G-OTH-39950

Brand
EATON CUTLER HAMMER
Item
C306DN3B NEMA Thermal Overload Relay
Category
NEMA Thermal Overload Relays
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

EATON CUTLER HAMMER
Manufacturer Part Number
C306DN3B
Type
NEMA Size 0/00, 20 A – 39 A
Phase
Three
Poles
3
Includes Thermal Units
No
Maximum Voltage Rating
600V AC
Thermal Units Required
3 Thermal (Heater) Units (Sold Separately)

Technical Documents

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EATON CUTLER HAMMER Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The EATON CUTLER HAMMER Overload Relay: Thermal Protection (MPN C306DN3B) is a three-phase NEMA thermal overload relay with a maximum voltage rating of 600V AC. It is designed for NEMA Size 0/00 and supports a current range of 20 A to 39 A. This relay does not include thermal units; three thermal (heater) units are required and sold separately.

Frequently Asked Questions

What is the EATON CUTLER HAMMER C306DN3B overload relay used for?

The EATON CUTLER HAMMER C306DN3B is a three-phase NEMA thermal overload relay that protects motors from overheating due to overcurrent. It is used in industrial motor control applications across machining, material handling, and HVAC systems, where reliable thermal protection is critical.

What are the specifications of the EATON CUTLER HAMMER C306DN3B overload relay?

The EATON CUTLER HAMMER C306DN3B is a three-pole NEMA Size 0/00 thermal overload relay rated for 600V AC and a current range of 20 A to 39 A. It requires three thermal (heater) units, sold separately, and does not include them. It is designed for three-phase motor protection.

Where to buy the EATON CUTLER HAMMER C306DN3B overload relay worldwide?

3G Electric supplies the EATON CUTLER HAMMER C306DN3B overload relay to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this NEMA thermal overload relay.

How to select thermal heater units for the EATON CUTLER HAMMER C306DN3B?

To select thermal heater units for the EATON CUTLER HAMMER C306DN3B, match the heater's current rating to the motor's full-load amperage. Use the manufacturer's heater selection table for NEMA Size 0/00 relays. Three units are required, sold separately. Consult a qualified electrician for proper sizing.

Used in

Common applications for EATON CUTLER HAMMER
Industrial motor control — Eaton Cutler-Hammer AN16 series IEC magnetic motor starters for starting and protecting three-phase motors in conveyor systems.
Process automation — Eaton Cutler-Hammer C306DN3B overload relays for thermal protection of motors in pump and fan applications.
Control panel assembly — Eaton Cutler-Hammer E22B2 contact blocks for momentary switching in pushbutton stations on machinery.
HVAC equipment — Eaton Cutler-Hammer NEMA size 1 motor starters (27 A) for controlling compressor and blower motors.
Material handling — Eaton Cutler-Hammer NEMA size 3 starters (90 A) for large motors in hoists and elevators.
Machine tool protection — Eaton Cutler-Hammer overload relays with thermal units for adjustable overload settings on lathes and mills.

EATON CUTLER HAMMER Products

3G Electric supplies EATON CUTLER HAMMER nema thermal overload relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Three-pole electronic overload relay for motor protection against overcurrent and phase loss. Rated 4 A to 20 A, 690V AC maximum. NEMA Size 00 with screw clamp terminals. Compatible with C25 Definite Purpose contactor series. No thermal units required
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Three-pole electronic overload relay for motor protection against overcurrent and phase loss. Rated 4 A to 20 A, 690V AC maximum. NEMA Size 00 with screw clamp terminals. Compatible with C25 Definite Purpose contactor series. No thermal units required
Three-phase NEMA electronic overload relay for motor protection. Rated 9 A to 45 A, 690V AC maximum, with screw clamp terminals. Compatible with C25 Definite Purpose contactors. Thermal units not required
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Three-phase NEMA electronic overload relay for motor protection. Rated 9 A to 45 A, 690V AC maximum, with screw clamp terminals. Compatible with C25 Definite Purpose contactors. Thermal units not required
Three-pole electronic overload relay for motor protection against overcurrent and phase loss. Rated for 1 A to 5 A, maximum 690V AC. NEMA Size 00, screw clamp terminals, compatible with C25 Definite Purpose contactors. No thermal units required
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Three-pole electronic overload relay for motor protection against overcurrent and phase loss. Rated for 1 A to 5 A, maximum 690V AC. NEMA Size 00, screw clamp terminals, compatible with C25 Definite Purpose contactors. No thermal units required
Three-pole NEMA electronic overload relay rated for 0.33 A to 1.65 A, with a maximum voltage of 690V AC. Features screw clamp terminals and is compatible with C25 Definite Purpose contactors. No thermal units required. Used for motor overload and phase loss protection in industrial control panels and HVAC equipment
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Three-pole NEMA electronic overload relay rated for 0.33 A to 1.65 A, with a maximum voltage of 690V AC. Features screw clamp terminals and is compatible with C25 Definite Purpose contactors. No thermal units required. Used for motor overload and phase loss protection in industrial control panels and HVAC equipment
Three-phase electronic overload relay with screw clamp terminals, rated for 4 A to 20 A and 690V AC. Designed for NEMA Size 0 applications, compatible with C25 Definite Purpose contactors. Provides motor protection against overcurrent, phase loss, and imbalance without requiring thermal units
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Three-phase electronic overload relay with screw clamp terminals, rated for 4 A to 20 A and 690V AC. Designed for NEMA Size 0 applications, compatible with C25 Definite Purpose contactors. Provides motor protection against overcurrent, phase loss, and imbalance without requiring thermal units
Three-pole electronic overload relay for NEMA Size 4 applications. Rated 28 A to 140 A at 690V AC, with screw clamp terminals. Compatible with C25 Definite Purpose contactors. No thermal units required; provides protection against overload, phase loss, and current imbalance in motor control circuits
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Three-pole electronic overload relay for NEMA Size 4 applications. Rated 28 A to 140 A at 690V AC, with screw clamp terminals. Compatible with C25 Definite Purpose contactors. No thermal units required; provides protection against overload, phase loss, and current imbalance in motor control circuits

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