Name: DCNHR Series - 900V DC Max Normally Open SPST Contactor Relays with Resin Housing
Brand: Littelfuse Inc.

DCNHR Series - 900V DC Max Normally Open SPST Contactor Relays with Resin Housing

Series: DCNHR

Questions? Contact Littelfuse Support

Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The DCNHR Series 450V High-Current High-Voltage DC Contactor Relay is a normally open (also known as monostable) relay with a resin body for corrosion resistance in harsh automotive environments. Versions are available with a pulse width modulation (PWM) coil to reduce power for keeping the contacts closed. Sealed contacts help ensure there is no leakage of electrical arc for safety. The high-current relay's permanent magnets blow out the magnetic field horizontally to achieve a rapid extinguishing of the DC arc.

The DCNHR Series contactor relay is available for 20A to 300A contact switching as well as with and without polarized contacts to suit the polarity of your application.

Features and Benefits

Available with 20A to 300A contact switching capability
Normally open relay design
Resin housing provides corrosion resistance in harsh automotive environments
Sealed contacts with no leakage of electrical arc for maximum safety
Built-in energy-saving coil to reduce the coil holding power
RoHS compliant
Available with mechanically linked auxiliary contacts

Applications

Battery Electric Vehicles
Hybrid Electric Vehicles
Electric Maintenance Vehicles
Industrial Applications

Access specifications, certifications, check availability and order parts below

Catalog #	Current Rating (Continuous) in Amps	Current Rating (Inrush) in Amps	Voltage Rating Max	Circuitry	Ingress Protection	Input Terminals	Output Terminals	Contact Material	Normal Position	Hardware	Housing	Mounting Method	Recommended Torque	Agency Approval - Shock	Agency Approval - Vibration	Stock	Samples

DCNHR100PF12	100	400A 5ms	900	SPST NO	IP67	M5 Female Thread	M5 Female Thread	Silver alloy contact	Normally Open	Passivated Stainless Steel M5×0.8×8 FLANGE BOLTS	Nylon 66	BOTTOM MOUNT	3N.m~4N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz，（10μs）	Check	Order
DCNHR100PF24	100	400A 5ms	900	SPST NO	IP67	M5 Female Thread	M5 Female Thread	Silver alloy contact	Normally Open	Passivated Stainless Steel M5×0.8×8 FLANGE BOLTS	Nylon 66	BOTTOM MOUNT	3N.m~4N.m	Shock 11ms 1/2 Sine Peak Operating 20G	4.4G, 10~200Hz，（10μs）	Check	Order
DCNHR100PF48	100	400A 5ms	900	SPST NO	IP67	M5 Bolt	M5 Bolt	Silver alloy contact	Normally Open	Passivated Stainless Steel Bolts and lock washers	Nylon 66	BOTTOM MOUNT	3N.m~4N.m	Shock 11ms 1/2 Sine Peak Operating 20G	4.4G, 10~200Hz，（10μs）	Check	Order
DCNHR100QF12	100	400A 5ms	900	SPST NO	IP67	M5 Bolt	M5 Bolt	Silver alloy contact	Normally Open	Passivated Stainless Steel Bolts and lock washers	Nylon 66	BOTTOM MOUNT	3N.m~4N.m	Shock 11ms 1/2 Sine Peak Operating 20G	4.4G, 10~200Hz，（10μs）	Check	Order
DCNHR100QF24	100	400A 5ms	900	SPST NO	IP67	M5 Bolt	M5 Bolt	Silver alloy contact	Normally Open	Passivated Stainless Steel Bolts and lock washers	Nylon 66	BOTTOM MOUNT	3N.m~4N.m	Shock 11ms 1/2 Sine Peak Operating 20G	4.4G, 10~200Hz，（10μs）	Check	Order
DCNHR100QF48	100	400A 5ms	900	SPST NO	IP67	M5 Bolt	M5 Bolt	Silver alloy contact	Normally Open	Two Copper M5 Bolt	Nylon 66	BOTTOM MOUNT	3N.m~4N.m	Shock 11ms 1/2 Sine Peak Operating 20G	4.4G, 10~200Hz，（10μs）	Check	Order
DCNHR150MFA	150	2000	900	SPST NO	IP54	M8	M8	Copper Alloy	Normally Open	M8 Stainless Steel Nuts	Grey Glass-Filled Plastic	Bottom Mount	8-12Nm	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G		Order
DCNHR150NFA	150	2000	900	SPST NO	IP54	M8	M8	Copper Alloy	Normally Open	M8 Stainless Steel Nuts	Grey Glass-Filled Plastic	Bottom Mount	8-12Nm	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G		Order
DCNHR150PFA	150	2000	900	SPST NO	IP54	M8	M8	Copper Alloy	Normally Open	M8 Stainless Steel Nuts	Grey Glass-Filled Plastic	Bottom Mount	8-12Nm	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G	Check	Order
DCNHR150QFA	150	2000	900	SPST NO	IP54	M8	M8	Copper Alloy	Normally Open	M8 Stainless Steel Nuts	Grey Glass-Filled Plastic	Bottom Mount	8-12Nm	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G	Check	Order
DCNHR200MFA	200	2000	900	SPST NO	IP54	M8	Bolt: M8	Copper Alloy	Normally Open	M8 Stainless Steel Nuts	Grey Glass-Filled Plastic	Bottom Mount	8-12Nm	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G		Order
DCNHR200NFA	200	2000	900	SPST NO	IP54	M8	Bolt: M8	Copper Alloy	Normally Open	M8 Stainless Steel Nuts	Grey Glass-Filled Plastic	Bottom Mount	8-12Nm	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G		Order
DCNHR200PFA	200	2000	900	SPST NO	IP54	M8	Bolt: M8	Copper Alloy	Normally Open	M8 Stainless Steel Nuts	Grey Glass-Filled Plastic	Bottom Mount	8-12Nm	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G	Check	Order
DCNHR200QFA	200	2000	900	SPST NO	IP54	M8	Bolt: M8	Copper Alloy	Normally Open	M8 Stainless Steel Nuts	Grey Glass-Filled Plastic	Bottom Mount	8-12Nm	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G	Check	Order
DCNHR20PF12	20		900	SPST NO	IP67	Bolt : M5	M5 Bolt	Copper Alloy	Normally Open	M5 Stainless Steel Nuts	Grey Glass-Filled Plastic	BOTTOM MOUNT	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR20PF12-01	20		900	SPST NO	IP67	Hole: M4	M4 Female Thread	Copper Alloy	Normally Open	M4 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM MOUNT	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR20PF24	20		900	SPST NO	IP67	Bolt : M5	M5 Bolt	Copper Alloy	Normally Open	M5 Stainless Steel Nuts	Grey Glass-Filled Plastic	BOTTOM MOUNT	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR20PF24-01	20		900	SPST NO	IP67	Hole: M4	M4 Female Thread	Copper Alloy	Normally Open	M4 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM MOUNT	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR20PF48	20		900	SPST NO	IP67	Bolt : M5	M5 Bolt	Copper Alloy	Normally Open	M5 Stainless Steel Nuts	Grey Glass-Filled Plastic	BOTTOM MOUNT	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR20PF48-01	20		900	SPST NO	IP67	Hole: M4	M4 Female Thread	Copper Alloy	Normally Open	M4 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM MOUNT	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR250MFA	250	350A 900Sec. 500A 180Sec.	900	SPST NO	IP54	M8 Bolt	M8 Bolt	Copper alloy with silver surface	Normally Open	M8 Stainless Steel Nuts	Nylon 66	BOTTOM MOUNT	1.8~3.5 N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G
DCNHR250NFA	250	350A 900Sec. 500A 180Sec.	900	SPST NO	IP54	M8 Bolt	M8 Bolt	Copper alloy with silver surface	Normally Open	M8 Stainless Steel Nuts	Nylon 66	BOTTOM MOUNT	8-12N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G
DCNHR250PFA	250		900	SPST NO	IP54	M8 Bolt	M8 Bolt	Copper alloy with silver surface	Normally Open	M8 Stainless Steel Nuts	Nylon 66	BOTTOM MOUNT	8-12N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G	Check	Order
DCNHR250QFA	250	350A 900Sec. 500A 180Sec.	900	SPST NO	IP54	M8 Bolt	M8 Bolt	Copper alloy with silver surface	Normally Open	M8 Stainless Steel Nuts	Nylon 66	BOTTOM MOUNT	8-12N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G	Check	Order
DCNHR300MFA	300	400A 600Sec. 600A 180Sec.	900	SPST NO	IP54	M8 Bolt	M8 Bolt	Copper alloy with silver surface	Normally Open	M8 Stainless Steel Nuts	Nylon 66	BOTTOM MOUNT	8-12N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G		Order
DCNHR300NFA	300	400A 600Sec. 600A 180Sec.	900	SPST NO	IP54	M8 Bolt	M8 Bolt	Copper alloy with silver surface	Normally Open	M8 Stainless Steel Nuts	Nylon 66	BOTTOM MOUNT	8-12N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G		Order
DCNHR300PFA	300	400A 600Sec. 600A 180Sec.	900	SPST NO	IP54	M8 Bolt	M8 Bolt	Copper alloy with silver surface	Normally Open	M8 Stainless Steel Nuts	Nylon 66	BOTTOM MOUNT	8-12N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G	Check	Order
DCNHR300QFA	300	400A 600Sec. 600A 180Sec.	900	SPST NO	IP54	M8 Bolt	M8 Bolt	Copper alloy with silver surface	Normally Open	M8 Stainless Steel Nuts	Nylon 66	BOTTOM MOUNT	8-12N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	Vibration, Sine, 80-2000Hz., Peak 20G	Check	Order
DCNHR30PF12	30		900	SPST NO	IP67	Bolt : M5	M5 Bolt	Copper Alloy	Normally Open	M5 Stainless Steel Nuts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR30PF12-01	30		900	SPST NO	IP67	Hole : M4	M4 Female Thread	Copper Alloy	Normally Open	M4 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR30PF24	30		900	SPST NO	IP67	Bolt : M5	M5 Bolt	Copper Alloy	Normally Open	M5 Stainless Steel Nuts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR30PF24-01	30		900	SPST NO	IP67	Hole : M4	M4 Female Thread	Copper Alloy	Normally Open	M4 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR30PF48	30		900	SPST NO	IP67	Bolt : M5	M5 Bolt	Copper Alloy	Normally Open	M5 Stainless Steel Nuts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR30PF48-01	30		900	SPST NO	IP67	Hole : M4	M4 Female Thread	Copper Alloy	Normally Open	M4 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR40PF12	40		900	SPST NO	IP67	Bolt : M5	M5 Bolt	Copper Alloy	Normally Open	M5 Stainless Steel Nuts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR40PF12-01	40		900	SPST NO	IP67	Hole : M4	M4 Female Thread	Copper Alloy	Normally Open	M4 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR40PF24	40		900	SPST NO	IP67	Bolt : M5	M5 Bolt	Copper Alloy	Normally Open	M5 Stainless Steel Nuts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR40PF24-01	40		900	SPST NO	IP67	Hole : M4	M4 Female Thread	Copper Alloy	Normally Open	M4 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR40PF48	40		900	SPST NO	IP67	Bolt : M5	M5 Bolt	Copper Alloy	Normally Open	M5 Stainless Steel Nuts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR40PF48-01	40		900	SPST NO	IP67	Hole : M4	M4 Female Thread	Copper Alloy	Normally Open	M4 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.8~2.3N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR50PF12	50		900	SPST NO	IP67	Hole: M5	M5 Female Thread	Silver alloy contact	Normally Open	M5 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.7~2.5N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR50PF24	50		900	SPST NO	IP67	Hole: M5	M5 Female Thread	Silver alloy contact	Normally Open	M5 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.7~2.5N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR50PF48	50		900	SPST NO	IP67	Hole: M5	M5 Female Thread	Silver alloy contact	Normally Open	M5 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.7~2.5N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR50QF12	50		900	SPST NO	IP67	Hole: M5	M5 Female Thread	Silver alloy contact	Normally Open	M5 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.7~2.5N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR50QF24	50		900	SPST NO	IP67	Hole: M5	M5 Female Thread	Silver alloy contact	Normally Open	M5 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.7~2.5N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order
DCNHR50QF48	50		900	SPST NO	IP67	Hole: M5	M5 Female Thread	Silver alloy contact	Normally Open	M5 Stainless Steel Bolts	Grey Glass-Filled Plastic	BOTTOM	1.7~2.5N.m	Shock, 11ms 1/2 Sine, Peak, Operating 20G	4.4G, 10~200Hz (10μs)	Check	Order

To request product environmental information, please complete the Product Environmental Information Request Form.

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